diff --git a/deployment/docker/supervisord/base.conf b/deployment/docker/supervisord/base.conf
index 2ddfdc6dc2..c5f89de9c5 100644
--- a/deployment/docker/supervisord/base.conf
+++ b/deployment/docker/supervisord/base.conf
@@ -2,6 +2,7 @@
 file=/tmp/supervisor.sock
 
 [supervisord]
+environment = AUTOMIGRATE="skip"
 logfile=/dev/stdout
 logfile_maxbytes=0
 loglevel=info
diff --git a/doc/admin/installation/docker_smallscale.rst b/doc/admin/installation/docker_smallscale.rst
index adbcb9d95b..6c5f2a85a5 100644
--- a/doc/admin/installation/docker_smallscale.rst
+++ b/doc/admin/installation/docker_smallscale.rst
@@ -240,6 +240,9 @@ The following snippet is an example on how to configure a nginx proxy for pretix
         listen 80 default_server;
         listen [::]:80 ipv6only=on default_server;
         server_name pretix.mydomain.com;
+        location / {
+            return 301 https://$host$request_uri;
+        }
     }
     server {
         listen 443 default_server;
diff --git a/doc/admin/installation/manual_smallscale.rst b/doc/admin/installation/manual_smallscale.rst
index 02e33e5bde..51870878ae 100644
--- a/doc/admin/installation/manual_smallscale.rst
+++ b/doc/admin/installation/manual_smallscale.rst
@@ -225,6 +225,9 @@ The following snippet is an example on how to configure a nginx proxy for pretix
         listen 80 default_server;
         listen [::]:80 ipv6only=on default_server;
         server_name pretix.mydomain.com;
+        location / {
+            return 301 https://$host$request_uri;
+        }
     }
     server {
         listen 443 default_server;
diff --git a/doc/api/resources/customers.rst b/doc/api/resources/customers.rst
index 17d5d9279b..d9fd2c14f0 100644
--- a/doc/api/resources/customers.rst
+++ b/doc/api/resources/customers.rst
@@ -26,10 +26,16 @@ date_joined                           datetime                   Date and time o
 locale                                string                     Preferred language of the customer
 last_modified                         datetime                   Date and time of modification of the record
 notes                                 string                     Internal notes and comments (or ``null``)
+password                              string                     Can only be set during creation of a new customer, will
+                                                                 not be included in any responses.
 ===================================== ========================== =======================================================
 
 .. versionadded:: 4.0
 
+.. versionchanged:: 4.3
+
+   Passwords can now be set through the API during customer creation.
+
 Endpoints
 ---------
 
@@ -146,6 +152,7 @@ Endpoints
 
       {
         "email": "test@example.org",
+        "password": "verysecret",
         "send_email": true
       }
 
diff --git a/doc/api/resources/orders.rst b/doc/api/resources/orders.rst
index 429fdb58b0..fcfd2b98dd 100644
--- a/doc/api/resources/orders.rst
+++ b/doc/api/resources/orders.rst
@@ -428,7 +428,7 @@ List of all orders
                            ``last_modified``, and ``status``. Default: ``datetime``
    :query string code: Only return orders that match the given order code
    :query string status: Only return orders in the given order status (see above)
-   :query string search: Only return orders matching a given search query
+   :query string search: Only return orders matching a given search query (matching for names, email addresses, and company names)
    :query integer item: Only return orders with a position that contains this item ID. *Warning:* Result will also include orders if they contain mixed items, and it will even return orders where the item is only contained in a canceled position.
    :query integer variation: Only return orders with a position that contains this variation ID. *Warning:* Result will also include orders if they contain mixed items and variations, and it will even return orders where the variation is only contained in a canceled position.
    :query boolean testmode: Only return orders with ``testmode`` set to ``true`` or ``false``
@@ -853,7 +853,7 @@ Creating orders
 
    You can supply the following fields of the resource:
 
-   * ``code`` (optional)
+   * ``code`` (optional) – Only ``A-Z`` and ``0-9``, but without ``O`` and ``1``.
    * ``status`` (optional) – Defaults to pending for non-free orders and paid for free orders. You can only set this to
      ``"n"`` for pending or ``"p"`` for paid. We will create a payment object for this order either in state ``created``
      or in state ``confirmed``, depending on this value. If you create a paid order, the ``order_paid`` signal will
diff --git a/doc/api/resources/webhooks.rst b/doc/api/resources/webhooks.rst
index 34980f40c5..051a2bd261 100644
--- a/doc/api/resources/webhooks.rst
+++ b/doc/api/resources/webhooks.rst
@@ -36,10 +36,16 @@ The following values for ``action_types`` are valid with pretix core:
     * ``pretix.event.order.canceled``
     * ``pretix.event.order.reactivated``
     * ``pretix.event.order.expired``
+    * ``pretix.event.order.expirychanged``
     * ``pretix.event.order.modified``
     * ``pretix.event.order.contact.changed``
     * ``pretix.event.order.changed.*``
+    * ``pretix.event.order.refund.created``
     * ``pretix.event.order.refund.created.externally``
+    * ``pretix.event.order.refund.requested``
+    * ``pretix.event.order.refund.done``
+    * ``pretix.event.order.refund.canceled``
+    * ``pretix.event.order.refund.failed``
     * ``pretix.event.order.approved``
     * ``pretix.event.order.denied``
     * ``pretix.event.checkin``
@@ -50,6 +56,10 @@ The following values for ``action_types`` are valid with pretix core:
     * ``pretix.subevent.added``
     * ``pretix.subevent.changed``
     * ``pretix.subevent.deleted``
+    * ``pretix.event.live.activated``
+    * ``pretix.event.live.deactivated``
+    * ``pretix.event.testmode.activated``
+    * ``pretix.event.testmode.deactivated``
 
 Installed plugins might register more valid values.
 
diff --git a/src/pretix/__init__.py b/src/pretix/__init__.py
index 09290226f0..d97a0dbd2d 100644
--- a/src/pretix/__init__.py
+++ b/src/pretix/__init__.py
@@ -19,4 +19,4 @@
 # You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
 # <https://www.gnu.org/licenses/>.
 #
-__version__ = "4.12.0.dev1"
+__version__ = "4.13.0.dev0"
diff --git a/src/pretix/api/serializers/event.py b/src/pretix/api/serializers/event.py
index e2f3b507d9..2e8ba1dc12 100644
--- a/src/pretix/api/serializers/event.py
+++ b/src/pretix/api/serializers/event.py
@@ -54,7 +54,10 @@ from pretix.base.models.items import SubEventItem, SubEventItemVariation
 from pretix.base.services.seating import (
     SeatProtected, generate_seats, validate_plan_change,
 )
-from pretix.base.settings import LazyI18nStringList, validate_event_settings
+from pretix.base.settings import (
+    PERSON_NAME_SALUTATIONS, PERSON_NAME_SCHEMES, PERSON_NAME_TITLE_GROUPS,
+    LazyI18nStringList, validate_event_settings,
+)
 from pretix.base.signals import api_event_settings_fields
 
 logger = logging.getLogger(__name__)
@@ -777,6 +780,7 @@ class EventSettingsSerializer(SettingsSerializer):
         'logo_image_large',
         'logo_show_title',
         'og_image',
+        'name_scheme',
     ]
 
     def __init__(self, *args, **kwargs):
@@ -842,4 +846,25 @@ class DeviceEventSettingsSerializer(EventSettingsSerializer):
         'invoice_address_from_country',
         'invoice_address_from_tax_id',
         'invoice_address_from_vat_id',
+        'name_scheme',
     ]
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.fields['_name_scheme_fields'] = serializers.JSONField(
+            read_only=True,
+            default=[{"key": k, "label": str(v), "weight": w} for k, v, w, *__ in PERSON_NAME_SCHEMES.get(self.event.settings.name_scheme)['fields']]
+        )
+        self.fields['_name_scheme_salutations'] = serializers.JSONField(
+            read_only=True,
+            default=[{"key": k, "label": str(v)} for k, v in PERSON_NAME_SALUTATIONS]
+        )
+        self.fields['_name_scheme_titles'] = serializers.JSONField(
+            read_only=True,
+            default=(
+                [{"key": k, "label": k}
+                 for k in PERSON_NAME_TITLE_GROUPS.get(self.event.settings.name_scheme_titles)[1]]
+                if self.event.settings.name_scheme_titles
+                else []
+            )
+        )
diff --git a/src/pretix/api/serializers/organizer.py b/src/pretix/api/serializers/organizer.py
index a4e5c75936..f181b0f06f 100644
--- a/src/pretix/api/serializers/organizer.py
+++ b/src/pretix/api/serializers/organizer.py
@@ -77,10 +77,11 @@ class CustomerSerializer(I18nAwareModelSerializer):
 
 class CustomerCreateSerializer(CustomerSerializer):
     send_email = serializers.BooleanField(default=False, required=False, allow_null=True)
+    password = serializers.CharField(write_only=True, required=False, allow_null=True)
 
     class Meta:
         model = Customer
-        fields = CustomerSerializer.Meta.fields + ('send_email',)
+        fields = CustomerSerializer.Meta.fields + ('send_email', 'password')
 
 
 class MembershipTypeSerializer(I18nAwareModelSerializer):
diff --git a/src/pretix/api/views/order.py b/src/pretix/api/views/order.py
index 5135fb1e65..7c791e6dc3 100644
--- a/src/pretix/api/views/order.py
+++ b/src/pretix/api/views/order.py
@@ -1322,6 +1322,7 @@ class OrderPositionViewSet(viewsets.ModelViewSet):
             serializer.is_valid(raise_exception=True)
             serializer.save()
             new_data = serializer.data
+            instance.order.create_transactions()
 
             if old_data != new_data:
                 log_data = self.request.data
diff --git a/src/pretix/api/views/organizer.py b/src/pretix/api/views/organizer.py
index 65b899e947..05b689826f 100644
--- a/src/pretix/api/views/organizer.py
+++ b/src/pretix/api/views/organizer.py
@@ -515,8 +515,8 @@ class CustomerViewSet(viewsets.ModelViewSet):
         raise MethodNotAllowed("Customers cannot be deleted.")
 
     @transaction.atomic()
-    def perform_create(self, serializer, send_email=False):
-        customer = serializer.save(organizer=self.request.organizer, password=make_password(None))
+    def perform_create(self, serializer, send_email=False, password=None):
+        customer = serializer.save(organizer=self.request.organizer, password=make_password(password))
         serializer.instance.log_action(
             'pretix.customer.created',
             user=self.request.user,
@@ -530,7 +530,7 @@ class CustomerViewSet(viewsets.ModelViewSet):
     def create(self, request, *args, **kwargs):
         serializer = CustomerCreateSerializer(data=request.data, context=self.get_serializer_context())
         serializer.is_valid(raise_exception=True)
-        self.perform_create(serializer, send_email=serializer.validated_data.pop('send_email', False))
+        self.perform_create(serializer, send_email=serializer.validated_data.pop('send_email', False), password=serializer.validated_data.pop('password', None))
         headers = self.get_success_headers(serializer.data)
         return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)
 
diff --git a/src/pretix/api/webhooks.py b/src/pretix/api/webhooks.py
index 49e058eacd..e8b42c972c 100644
--- a/src/pretix/api/webhooks.py
+++ b/src/pretix/api/webhooks.py
@@ -219,6 +219,10 @@ def register_default_webhook_events(sender, **kwargs):
             'pretix.event.order.expired',
             _('Order expired'),
         ),
+        ParametrizedOrderWebhookEvent(
+            'pretix.event.order.expirychanged',
+            _('Order expiry date changed'),
+        ),
         ParametrizedOrderWebhookEvent(
             'pretix.event.order.modified',
             _('Order information changed'),
@@ -231,10 +235,30 @@ def register_default_webhook_events(sender, **kwargs):
             'pretix.event.order.changed.*',
             _('Order changed'),
         ),
+        ParametrizedOrderWebhookEvent(
+            'pretix.event.order.refund.created',
+            _('Refund of payment created'),
+        ),
         ParametrizedOrderWebhookEvent(
             'pretix.event.order.refund.created.externally',
             _('External refund of payment'),
         ),
+        ParametrizedOrderWebhookEvent(
+            'pretix.event.order.refund.requested',
+            _('Refund of payment requested by customer'),
+        ),
+        ParametrizedOrderWebhookEvent(
+            'pretix.event.order.refund.done',
+            _('Refund of payment completed'),
+        ),
+        ParametrizedOrderWebhookEvent(
+            'pretix.event.order.refund.canceled',
+            _('Refund of payment canceled'),
+        ),
+        ParametrizedOrderWebhookEvent(
+            'pretix.event.order.refund.failed',
+            _('Refund of payment failed'),
+        ),
         ParametrizedOrderWebhookEvent(
             'pretix.event.order.approved',
             _('Order approved'),
@@ -275,6 +299,22 @@ def register_default_webhook_events(sender, **kwargs):
             'pretix.subevent.deleted',
             pgettext_lazy('subevent', 'Event series date deleted'),
         ),
+        ParametrizedEventWebhookEvent(
+            'pretix.event.live.activated',
+            _('Shop taken live'),
+        ),
+        ParametrizedEventWebhookEvent(
+            'pretix.event.live.deactivated',
+            _('Shop taken offline'),
+        ),
+        ParametrizedEventWebhookEvent(
+            'pretix.event.testmode.activated',
+            _('Testmode of shop has been activated'),
+        ),
+        ParametrizedEventWebhookEvent(
+            'pretix.event.testmode.deactivated',
+            _('Testmode of shop has been deactivated'),
+        ),
     )
 
 
diff --git a/src/pretix/base/email.py b/src/pretix/base/email.py
index fbab7f5ed0..1bfbbd9216 100644
--- a/src/pretix/base/email.py
+++ b/src/pretix/base/email.py
@@ -43,6 +43,7 @@ from pretix.base.i18n import (
     LazyCurrencyNumber, LazyDate, LazyExpiresDate, LazyNumber,
 )
 from pretix.base.models import Event
+from pretix.base.reldate import RelativeDateWrapper
 from pretix.base.settings import PERSON_NAME_SCHEMES
 from pretix.base.signals import (
     register_html_mail_renderers, register_mail_placeholders,
@@ -469,6 +470,19 @@ def base_placeholders(sender, **kwargs):
                 }
             ),
         ),
+        SimpleFunctionalMailTextPlaceholder(
+            'order_modification_deadline_date_and_time', ['order', 'event'],
+            lambda order, event:
+            date_format(order.modify_deadline.astimezone(event.timezone), 'SHORT_DATETIME_FORMAT')
+            if order.modify_deadline
+            else '',
+            lambda event: date_format(
+                event.settings.get(
+                    'last_order_modification_date', as_type=RelativeDateWrapper
+                ).datetime(event).astimezone(event.timezone),
+                'SHORT_DATETIME_FORMAT'
+            ) if event.settings.get('last_order_modification_date') else '',
+        ),
         SimpleFunctionalMailTextPlaceholder(
             'event_location', ['event_or_subevent'], lambda event_or_subevent: str(event_or_subevent.location or ''),
             lambda event: str(event.location or ''),
diff --git a/src/pretix/base/exporters/orderlist.py b/src/pretix/base/exporters/orderlist.py
index d03ebe2c54..81510f3264 100644
--- a/src/pretix/base/exporters/orderlist.py
+++ b/src/pretix/base/exporters/orderlist.py
@@ -610,7 +610,10 @@ class OrderListExporter(MultiSheetListExporter):
             for k, label, w in name_scheme['fields']:
                 headers.append(_('Invoice address name') + ': ' + str(label))
         headers += [
-            _('Address'), _('ZIP code'), _('City'), _('Country'), pgettext('address', 'State'), _('VAT ID'),
+            _('Invoice address street'), _('Invoice address ZIP code'), _('Invoice address city'),
+            _('Invoice address country'),
+            pgettext('address', 'Invoice address state'),
+            _('VAT ID'),
         ]
         headers += [
             _('Sales channel'), _('Order locale'),
diff --git a/src/pretix/base/models/orders.py b/src/pretix/base/models/orders.py
index 3c94cb80ac..8ebb861a4c 100644
--- a/src/pretix/base/models/orders.py
+++ b/src/pretix/base/models/orders.py
@@ -746,6 +746,19 @@ class Order(LockModel, LoggedModel):
                 length += 1
                 iteration = 0
 
+    @property
+    def modify_deadline(self):
+        modify_deadline = self.event.settings.get('last_order_modification_date', as_type=RelativeDateWrapper)
+        if self.event.has_subevents and modify_deadline:
+            dates = [
+                modify_deadline.datetime(se)
+                for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True))
+            ]
+            return min(dates) if dates else None
+        elif modify_deadline:
+            return modify_deadline.datetime(self.event)
+        return None
+
     @property
     def can_modify_answers(self) -> bool:
         """
@@ -758,16 +771,7 @@ class Order(LockModel, LoggedModel):
         if self.status not in (Order.STATUS_PENDING, Order.STATUS_PAID, Order.STATUS_EXPIRED):
             return False
 
-        modify_deadline = self.event.settings.get('last_order_modification_date', as_type=RelativeDateWrapper)
-        if self.event.has_subevents and modify_deadline:
-            dates = [
-                modify_deadline.datetime(se)
-                for se in self.event.subevents.filter(id__in=self.positions.values_list('subevent', flat=True))
-            ]
-            modify_deadline = min(dates) if dates else None
-        elif modify_deadline:
-            modify_deadline = modify_deadline.datetime(self.event)
-
+        modify_deadline = self.modify_deadline
         if modify_deadline is not None and now() > modify_deadline:
             return False
 
diff --git a/src/pretix/base/models/tax.py b/src/pretix/base/models/tax.py
index 4eda56f5af..34bbd93d1a 100644
--- a/src/pretix/base/models/tax.py
+++ b/src/pretix/base/models/tax.py
@@ -114,7 +114,7 @@ EU_CURRENCIES = {
     'RO': 'RON',
     'SE': 'SEK'
 }
-VAT_ID_COUNTRIES = EU_COUNTRIES | {'CH'}
+VAT_ID_COUNTRIES = EU_COUNTRIES | {'CH', 'NO'}
 
 
 def is_eu_country(cc):
diff --git a/src/pretix/base/orderimport.py b/src/pretix/base/orderimport.py
index b83d5b5c9d..d4f850790f 100644
--- a/src/pretix/base/orderimport.py
+++ b/src/pretix/base/orderimport.py
@@ -392,7 +392,7 @@ class InvoiceAddressCountry(ImportColumn):
         return list(countries)
 
     def clean(self, value, previous_values):
-        if value and not Country(value).numeric:
+        if value and not (Country(value).numeric or value in settings.COUNTRIES_OVERRIDE):
             raise ValidationError(_("Please enter a valid country code."))
         return value
 
@@ -538,7 +538,7 @@ class AttendeeCountry(ImportColumn):
         return list(countries)
 
     def clean(self, value, previous_values):
-        if value and not Country(value).numeric:
+        if value and not (Country(value).numeric or value in settings.COUNTRIES_OVERRIDE):
             raise ValidationError(_("Please enter a valid country code."))
         return value
 
diff --git a/src/pretix/base/pdf.py b/src/pretix/base/pdf.py
index cc584072cc..cbc529a70c 100644
--- a/src/pretix/base/pdf.py
+++ b/src/pretix/base/pdf.py
@@ -57,7 +57,7 @@ from django.utils.html import conditional_escape
 from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _, pgettext
 from i18nfield.strings import LazyI18nString
-from PyPDF2 import PdfFileReader
+from PyPDF2 import PdfReader
 from pytz import timezone
 from reportlab.graphics import renderPDF
 from reportlab.graphics.barcode.qr import QrCodeWidget
@@ -646,7 +646,7 @@ class Renderer:
         self.event = event
         if self.background_file:
             self.bg_bytes = self.background_file.read()
-            self.bg_pdf = PdfFileReader(BytesIO(self.bg_bytes), strict=False)
+            self.bg_pdf = PdfReader(BytesIO(self.bg_bytes), strict=False)
         else:
             self.bg_bytes = None
             self.bg_pdf = None
@@ -861,7 +861,7 @@ class Renderer:
         canvas.restoreState()
 
     def draw_page(self, canvas: Canvas, order: Order, op: OrderPosition, show_page=True, only_page=None):
-        page_count = self.bg_pdf.getNumPages()
+        page_count = len(self.bg_pdf.pages)
 
         if not only_page and not show_page:
             raise ValueError("only_page=None and show_page=False cannot be combined")
@@ -881,7 +881,7 @@ class Renderer:
                 elif o['type'] == "poweredby":
                     self._draw_poweredby(canvas, op, o)
                 if self.bg_pdf:
-                    canvas.setPageSize((self.bg_pdf.getPage(page).mediaBox[2], self.bg_pdf.getPage(page).mediaBox[3]))
+                    canvas.setPageSize((self.bg_pdf.pages[0].mediabox[2], self.bg_pdf.pages[0].mediabox[3]))
             if show_page:
                 canvas.showPage()
 
@@ -905,17 +905,17 @@ class Renderer:
                 with open(os.path.join(d, 'out.pdf'), 'rb') as f:
                     return BytesIO(f.read())
         else:
-            from PyPDF2 import PdfFileReader, PdfFileWriter
+            from PyPDF2 import PdfReader, PdfWriter
             buffer.seek(0)
-            new_pdf = PdfFileReader(buffer)
-            output = PdfFileWriter()
+            new_pdf = PdfReader(buffer)
+            output = PdfWriter()
 
             for i, page in enumerate(new_pdf.pages):
-                bg_page = copy.copy(self.bg_pdf.getPage(i))
-                bg_page.mergePage(page)
-                output.addPage(bg_page)
+                bg_page = copy.copy(self.bg_pdf.pages[i])
+                bg_page.merge_page(page)
+                output.add_page(bg_page)
 
-            output.addMetadata({
+            output.add_metadata({
                 '/Title': str(title),
                 '/Creator': 'pretix',
             })
diff --git a/src/pretix/base/services/orderimport.py b/src/pretix/base/services/orderimport.py
index ff6665df80..65773c9241 100644
--- a/src/pretix/base/services/orderimport.py
+++ b/src/pretix/base/services/orderimport.py
@@ -36,6 +36,7 @@ from pretix.base.models import (
 from pretix.base.models.orders import Transaction
 from pretix.base.orderimport import get_all_columns
 from pretix.base.services.invoices import generate_invoice, invoice_qualified
+from pretix.base.services.locking import NoLockManager
 from pretix.base.services.tasks import ProfiledEventTask
 from pretix.base.signals import order_paid, order_placed
 from pretix.celery_app import app
@@ -85,9 +86,9 @@ def setif(record, obj, attr, setting):
 
 @app.task(base=ProfiledEventTask, throws=(DataImportError,))
 def import_orders(event: Event, fileid: str, settings: dict, locale: str, user) -> None:
-    # TODO: quotacheck?
     cf = CachedFile.objects.get(id=fileid)
     user = User.objects.get(pk=user)
+    seats_used = False
     with language(locale, event.settings.region):
         cols = get_all_columns(event)
         parsed = parse_csv(cf.file)
@@ -133,6 +134,8 @@ def import_orders(event: Event, fileid: str, settings: dict, locale: str, user)
                 position = OrderPosition(positionid=len(order._positions) + 1)
                 position.attendee_name_parts = {'_scheme': event.settings.name_scheme}
                 position.meta_info = {}
+                if position.seat is not None:
+                    seats_used = True
                 order._positions.append(position)
                 position.assign_pseudonymization_id()
 
@@ -144,9 +147,12 @@ def import_orders(event: Event, fileid: str, settings: dict, locale: str, user)
                     _('Invalid data in row {row}: {message}').format(row=i, message=str(e))
                 )
 
-        # quota check?
-        with event.lock():
-            with transaction.atomic():
+        # We don't support vouchers, quotas, or memberships here, so we only need to lock if seats
+        # are in use
+        lockfn = event.lock if seats_used else NoLockManager
+
+        try:
+            with lockfn(), transaction.atomic():
                 save_transactions = []
                 for o in orders:
                     o.total = sum([c.price for c in o._positions])  # currently no support for fees
@@ -204,4 +210,7 @@ def import_orders(event: Event, fileid: str, settings: dict, locale: str, user)
                     ) and not o.invoices.last()
                     if gen_invoice:
                         generate_invoice(o, trigger_pdf=True)
+        except DataImportError:
+            raise ValidationError(_('We were not able to process your request completely as the server was too busy. '
+                                    'Please try again.'))
     cf.delete()
diff --git a/src/pretix/base/services/tax.py b/src/pretix/base/services/tax.py
index c2837d5650..5ae1b8810b 100644
--- a/src/pretix/base/services/tax.py
+++ b/src/pretix/base/services/tax.py
@@ -22,9 +22,9 @@
 import logging
 import os
 import re
-from urllib.error import HTTPError
+from xml.etree import ElementTree
 
-import vat_moss.errors
+import requests
 import vat_moss.id
 from django.conf import settings
 from django.utils.translation import gettext_lazy as _
@@ -35,6 +35,16 @@ from zeep.exceptions import Fault
 from pretix.base.models.tax import cc_to_vat_prefix, is_eu_country
 
 logger = logging.getLogger(__name__)
+error_messages = {
+    'unavailable': _(
+        'Your VAT ID could not be checked, as the VAT checking service of '
+        'your country is currently not available. We will therefore '
+        'need to charge VAT on your invoice. You can get the tax amount '
+        'back via the VAT reimbursement process.'
+    ),
+    'invalid': _('This VAT ID is not valid. Please re-check your input.'),
+    'country_mismatch': _('Your VAT ID does not match the selected country.'),
+}
 
 
 class VATIDError(Exception):
@@ -50,33 +60,104 @@ class VATIDTemporaryError(VATIDError):
     pass
 
 
-def _validate_vat_id_EU(vat_id, country_code):
-    if vat_id[:2] != cc_to_vat_prefix(country_code):
-        raise VATIDFinalError(_('Your VAT ID does not match the selected country.'))
+def _validate_vat_id_NO(vat_id, country_code):
+    # Inspired by vat_moss library
+    vat_id = vat_moss.id.normalize(vat_id)
+
+    if not vat_id or len(vat_id) < 3 or not re.match('^\\d{9}MVA$', vat_id[2:]):
+        raise VATIDFinalError(error_messages['invalid'])
+
+    organization_number = vat_id[2:].replace('MVA', '')
+    validation_url = 'https://data.brreg.no/enhetsregisteret/api/enheter/%s' % organization_number
 
     try:
-        result = vat_moss.id.validate(vat_id)
-        if result:
-            country_code, normalized_id, company_name = result
-            return normalized_id
-    except (vat_moss.errors.InvalidError, ValueError):
-        raise VATIDFinalError(_('This VAT ID is not valid. Please re-check your input.'))
-    except vat_moss.errors.WebServiceUnavailableError:
+        response = requests.get(validation_url, timeout=10)
+        if response.status_code in (404, 400):
+            raise VATIDFinalError(error_messages['invalid'])
+
+        response.raise_for_status()
+
+        info = response.json()
+        # This should never happen, but keeping it incase the API is changed
+        if 'organisasjonsnummer' not in info or info['organisasjonsnummer'] != organization_number:
+            logger.warning(
+                'VAT ID checking failed for Norway due to missing or mismatching organisasjonsnummer in repsonse'
+            )
+            raise VATIDFinalError(error_messages['invalid'])
+    except requests.RequestException:
         logger.exception('VAT ID checking failed for country {}'.format(country_code))
-        raise VATIDTemporaryError(_(
-            'Your VAT ID could not be checked, as the VAT checking service of '
-            'your country is currently not available. We will therefore '
-            'need to charge VAT on your invoice. You can get the tax amount '
-            'back via the VAT reimbursement process.'
-        ))
-    except (vat_moss.errors.WebServiceError, HTTPError):
+        raise VATIDTemporaryError(error_messages['unavailable'])
+    else:
+        return vat_id
+
+
+def _validate_vat_id_EU(vat_id, country_code):
+    # Inspired by vat_moss library
+    try:
+        vat_id = vat_moss.id.normalize(vat_id)
+    except ValueError:
+        raise VATIDFinalError(error_messages['invalid'])
+
+    if not vat_id or len(vat_id) < 3:
+        raise VATIDFinalError(error_messages['invalid'])
+
+    number = vat_id[2:]
+
+    if vat_id[:2] != cc_to_vat_prefix(country_code):
+        raise VATIDFinalError(error_messages['country_mismatch'])
+
+    if not re.match(vat_moss.id.ID_PATTERNS[cc_to_vat_prefix(country_code)]['regex'], number):
+        raise VATIDFinalError(error_messages['invalid'])
+
+    payload = """
+            <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:urn="urn:ec.europa.eu:taxud:vies:services:checkVat:types">
+               <soapenv:Header/>
+               <soapenv:Body>
+                  <urn:checkVat>
+                     <urn:countryCode>%s</urn:countryCode>
+                     <urn:vatNumber>%s</urn:vatNumber>
+                  </urn:checkVat>
+               </soapenv:Body>
+            </soapenv:Envelope>
+    """.strip() % (country_code, number)
+
+    try:
+        response = requests.post(
+            'https://ec.europa.eu/taxation_customs/vies/services/checkVatService',
+            data=payload,
+            timeout=10,
+        )
+        response.raise_for_status()
+
+        return_xml = response.text
+
+        try:
+            envelope = ElementTree.fromstring(return_xml)
+        except ElementTree.ParseError:
+            logger.error(
+                f'VAT ID checking failed for {country_code} due to XML parse error'
+            )
+            raise VATIDTemporaryError(error_messages['unavailable'])
+
+        namespaces = {
+            'soap': 'http://schemas.xmlsoap.org/soap/envelope/',
+            'vat': 'urn:ec.europa.eu:taxud:vies:services:checkVat:types'
+        }
+        valid_elements = envelope.findall('./soap:Body/vat:checkVatResponse/vat:valid', namespaces)
+        if not valid_elements:
+            logger.error(
+                f'VAT ID checking failed for {country_code} due to missing <valid> tag'
+            )
+            raise VATIDTemporaryError(error_messages['unavailable'])
+
+        if valid_elements[0].text.lower() != 'true':
+            raise VATIDFinalError(error_messages['invalid'])
+
+    except requests.RequestException:
         logger.exception('VAT ID checking failed for country {}'.format(country_code))
-        raise VATIDTemporaryError(_(
-            'Your VAT ID could not be checked, as the VAT checking service of '
-            'your country returned an incorrect result. We will therefore '
-            'need to charge VAT on your invoice. Please contact support to '
-            'resolve this manually.'
-        ))
+        raise VATIDTemporaryError(error_messages['unavailable'])
+    else:
+        return vat_id
 
 
 def _validate_vat_id_CH(vat_id, country_code):
@@ -85,10 +166,13 @@ def _validate_vat_id_CH(vat_id, country_code):
 
     vat_id = re.sub('[^A-Z0-9]', '', vat_id.replace('HR', '').replace('MWST', ''))
     try:
-        transport = Transport(cache=SqliteCache(os.path.join(settings.CACHE_DIR, "validate_vat_id_ch_zeep_cache.db")))
+        transport = Transport(
+            cache=SqliteCache(os.path.join(settings.CACHE_DIR, "validate_vat_id_ch_zeep_cache.db")),
+            timeout=10
+        )
         client = Client(
             'https://www.uid-wse.admin.ch/V5.0/PublicServices.svc?wsdl',
-            transport=transport
+            transport=transport,
         )
         result = client.service.ValidateUID(uid=vat_id)
     except Fault as e:
@@ -125,10 +209,14 @@ def _validate_vat_id_CH(vat_id, country_code):
 
 
 def validate_vat_id(vat_id, country_code):
+    if not vat_id:
+        return vat_id
     country_code = str(country_code)
     if is_eu_country(country_code):
         return _validate_vat_id_EU(vat_id, country_code)
     elif country_code == 'CH':
         return _validate_vat_id_CH(vat_id, country_code)
+    elif country_code == 'NO':
+        return _validate_vat_id_NO(vat_id, country_code)
 
     raise VATIDTemporaryError(f'VAT ID should not be entered for country {country_code}')
diff --git a/src/pretix/base/settings.py b/src/pretix/base/settings.py
index 4c1dbbd08b..a0518ad21f 100644
--- a/src/pretix/base/settings.py
+++ b/src/pretix/base/settings.py
@@ -57,6 +57,7 @@ from django_countries.fields import Country
 from hierarkey.models import GlobalSettingsBase, Hierarkey
 from i18nfield.forms import I18nFormField, I18nTextarea, I18nTextInput
 from i18nfield.strings import LazyI18nString
+from phonenumbers import PhoneNumber, parse
 from rest_framework import serializers
 
 from pretix.api.serializers.fields import (
@@ -2594,7 +2595,9 @@ Your {organizer} team"""))
     },
     'name_scheme': {
         'default': 'full',  # default for new events is 'given_family'
-        'type': str
+        'type': str,
+        'serializer_class': serializers.ChoiceField,
+        'serializer_kwargs': {},
     },
     'giftcard_length': {
         'default': settings.ENTROPY['giftcard_secret'],
@@ -2989,6 +2992,9 @@ PERSON_NAME_SCHEMES = OrderedDict([
         },
     }),
 ])
+
+DEFAULTS['name_scheme']['serializer_kwargs']['choices'] = ((k, k) for k in PERSON_NAME_SCHEMES)
+
 COUNTRIES_WITH_STATE_IN_ADDRESS = {
     # Source: http://www.bitboost.com/ref/international-address-formats.html
     # This is not a list of countries that *have* states, this is a list of countries where states
@@ -3025,6 +3031,7 @@ settings_hierarkey.add_type(LazyI18nStringList,
 settings_hierarkey.add_type(RelativeDateWrapper,
                             serialize=lambda rdw: rdw.to_string(),
                             unserialize=lambda s: RelativeDateWrapper.from_string(s))
+settings_hierarkey.add_type(PhoneNumber, lambda pn: pn.as_international, lambda s: parse(s))
 
 
 @settings_hierarkey.set_global(cache_namespace='global')
diff --git a/src/pretix/base/templates/400_hostname.html b/src/pretix/base/templates/400_hostname.html
new file mode 100644
index 0000000000..881d0582c5
--- /dev/null
+++ b/src/pretix/base/templates/400_hostname.html
@@ -0,0 +1,52 @@
+{% extends "error.html" %}
+{% load i18n %}
+{% load static %}
+{% block title %}{% trans "Unknown host" %}{% endblock %}
+{% block content %}
+<i class="fa fa-question-circle-o fa-fw big-icon"></i>
+<div class="error-details">
+    <h1>{% trans "Unknown host" %}</h1>
+    <p>
+        {% blocktrans trimmed with host=header_host %}
+        Your browser told us that you want to access "{{ header_host }}". Unfortunately, we don't have
+        any content for this domain.
+        {% endblocktrans %}
+    </p>
+    {% if is_fresh_install %}
+    <p>
+        {% blocktrans trimmed %}
+        It looks like this is a fresh installation of pretix. This error message is probably caused due to
+        the fact that either your configuration includes the wrong site URL or your reverse proxy is sending
+        the wrong header.
+        {% endblocktrans %}
+    </p>
+    <dl>
+        <dt>{% trans "Expected host according to configuration" %}</dt>
+        <dd><code>{{ site_host }}</code></dd>
+        <dt>{% trans "Received headers" %}</dt>
+        <dd>
+            <code>Host: {{ request.headers.Host }}</code>
+            {% if xfh %}
+            <br>
+            <code>X-Forwarded-For: {{ xfh }}</code>
+            {% if not settings.USE_X_FORWARDED_HOST %}({% trans "ignored" %}){% endif %}
+            {% endif %}
+        </dd>
+        <dt>{% trans "Derived host from headers" %}</dt>
+        <dd><code>{{ header_host }}</code></dd>
+    </dl>
+    {% else %}
+    <p>
+        {% blocktrans trimmed %}
+        If you just configured this as a domain for your ticket shop, you now need to set this up as a "custom domain"
+        in your organizer account.
+        {% endblocktrans %}
+    </p>
+    {% endif %}
+    <p class="links">
+        <a id='goback' href='#'>{% trans "Take a step back" %}</a>
+        &middot; <a id='reload' href='#'>{% trans "Try again" %}</a>
+    </p>
+    <img src="{% static "pretixbase/img/pretix-logo.svg" %}" class="logo"/>
+</div>
+{% endblock %}
diff --git a/src/pretix/base/templates/pretixbase/email/base.html b/src/pretix/base/templates/pretixbase/email/base.html
index b7e24cbe4e..b0e13c7681 100644
--- a/src/pretix/base/templates/pretixbase/email/base.html
+++ b/src/pretix/base/templates/pretixbase/email/base.html
@@ -199,7 +199,7 @@
         <tr>
             <td style="line-height: 0">
                 <img class="wide" src="data:image/png;base64,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"
-                style="max-height: 60px;">
+                style="max-height: 60px;" alt="">
             </td>
         </tr>
         <!--<![endif]-->
@@ -233,7 +233,7 @@
             <td style="line-height: 0">
                 <br>
                 <img class="wide" src="data:image/png;base64,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"
-                style="max-height: 60px;">
+                style="max-height: 60px;" alt="">
             </td>
         </tr>
         <!--<![endif]-->
diff --git a/src/pretix/base/templates/pretixbase/email/separator.html b/src/pretix/base/templates/pretixbase/email/separator.html
index 0d2e442889..f0ff2f7263 100644
--- a/src/pretix/base/templates/pretixbase/email/separator.html
+++ b/src/pretix/base/templates/pretixbase/email/separator.html
@@ -3,7 +3,7 @@
     <td>
         <div style="line-height: 18px;height: 18px;">&nbsp;</div>
         <img class="wide" src="data:image/png;base64,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"
-            style="max-height: 4px;">
+            style="max-height: 4px;" alt="">
         <div style="line-height: 18px;height: 18px;">&nbsp;</div>
     </td>
 </tr>
diff --git a/src/pretix/base/views/tasks.py b/src/pretix/base/views/tasks.py
index 023ea779a1..9a82d228a9 100644
--- a/src/pretix/base/views/tasks.py
+++ b/src/pretix/base/views/tasks.py
@@ -216,7 +216,8 @@ class AsyncFormView(AsyncMixin, FormView):
     task_base = ProfiledEventTask
 
     def __init_subclass__(cls):
-        def async_execute(self, *, request_path, query_string, form_kwargs, locale, tz, organizer=None, event=None, user=None, session_key=None):
+        def async_execute(self, *, request_path, query_string, form_kwargs, locale, tz, url_kwargs=None, url_args=None,
+                          organizer=None, event=None, user=None, session_key=None):
             view_instance = cls()
             form_kwargs['data'] = QueryDict(form_kwargs['data'])
             req = RequestFactory().post(
@@ -225,6 +226,8 @@ class AsyncFormView(AsyncMixin, FormView):
                 content_type='application/x-www-form-urlencoded'
             )
             view_instance.request = req
+            view_instance.kwargs = url_kwargs
+            view_instance.args = url_args
             if event:
                 view_instance.request.event = event
                 view_instance.request.organizer = event.organizer
@@ -284,6 +287,8 @@ class AsyncFormView(AsyncMixin, FormView):
             'request_path': self.request.path,
             'query_string': self.request.GET.urlencode(),
             'form_kwargs': form_kwargs,
+            'url_args': self.args,
+            'url_kwargs': self.kwargs,
             'locale': get_language(),
             'tz': get_current_timezone().zone,
         }
@@ -336,6 +341,8 @@ class AsyncPostView(AsyncMixin, View):
                 content_type='application/x-www-form-urlencoded'
             )
             view_instance.request = req
+            view_instance.kwargs = url_kwargs
+            view_instance.args = url_args
             if event:
                 view_instance.request.event = event
                 view_instance.request.organizer = event.organizer
diff --git a/src/pretix/control/context.py b/src/pretix/control/context.py
index 30d15f988d..736887413d 100644
--- a/src/pretix/control/context.py
+++ b/src/pretix/control/context.py
@@ -71,7 +71,7 @@ def _default_context(request):
     except Resolver404:
         return {}
 
-    if not request.path.startswith(get_script_prefix() + 'control'):
+    if not request.path.startswith(get_script_prefix() + 'control') or not hasattr(request, 'user'):
         return {}
     ctx = {
         'url_name': url.url_name,
diff --git a/src/pretix/control/forms/event.py b/src/pretix/control/forms/event.py
index 2f54c24ea4..b3c3521d64 100644
--- a/src/pretix/control/forms/event.py
+++ b/src/pretix/control/forms/event.py
@@ -39,7 +39,7 @@ from urllib.parse import urlencode, urlparse
 from django import forms
 from django.conf import settings
 from django.core.exceptions import ValidationError
-from django.core.validators import validate_email
+from django.core.validators import MaxValueValidator, validate_email
 from django.db.models import Prefetch, Q, prefetch_related_objects
 from django.forms import (
     CheckboxSelectMultiple, formset_factory, inlineformset_factory,
@@ -848,6 +848,7 @@ class InvoiceSettingsForm(SettingsForm):
         self.fields['invoice_generate_sales_channels'].choices = (
             (c.identifier, c.verbose_name) for c in get_all_sales_channels().values()
         )
+        self.fields['invoice_numbers_counter_length'].validators.append(MaxValueValidator(15))
 
     def clean(self):
         data = super().clean()
diff --git a/src/pretix/control/templates/pretixcontrol/event/settings.html b/src/pretix/control/templates/pretixcontrol/event/settings.html
index 92029cf9bc..0a01f8be2f 100644
--- a/src/pretix/control/templates/pretixcontrol/event/settings.html
+++ b/src/pretix/control/templates/pretixcontrol/event/settings.html
@@ -207,14 +207,16 @@
                 {% bootstrap_field sform.logo_show_title layout="control" %}
                 {% bootstrap_field sform.og_image layout="control" %}
                 {% url "control:organizer.edit" organizer=request.organizer.slug as org_url %}
-                {% propagated request.event org_url "primary_color" "primary_font" "theme_color_success" "theme_color_danger" "theme_color_background" "theme_round_borders" %}
-                    {% bootstrap_field sform.primary_color layout="control" %}
-                    {% bootstrap_field sform.theme_color_success layout="control" %}
-                    {% bootstrap_field sform.theme_color_danger layout="control" %}
-                    {% bootstrap_field sform.theme_color_background layout="control" %}
-                    {% bootstrap_field sform.theme_round_borders layout="control" %}
-                    {% bootstrap_field sform.primary_font layout="control" %}
-                {% endpropagated %}
+                {% with org_url|add:"#tab-0-4-open" as org_url_tab %}
+                    {% propagated request.event org_url_tab "primary_color" "primary_font" "theme_color_success" "theme_color_danger" "theme_color_background" "theme_round_borders" %}
+                        {% bootstrap_field sform.primary_color layout="control" %}
+                        {% bootstrap_field sform.theme_color_success layout="control" %}
+                        {% bootstrap_field sform.theme_color_danger layout="control" %}
+                        {% bootstrap_field sform.theme_color_background layout="control" %}
+                        {% bootstrap_field sform.theme_round_borders layout="control" %}
+                        {% bootstrap_field sform.primary_font layout="control" %}
+                    {% endpropagated %}
+                {% endwith %}
             </fieldset>
             <fieldset>
                 <legend>{% trans "Timeline" %}</legend>
diff --git a/src/pretix/control/templatetags/hierarkey_form.py b/src/pretix/control/templatetags/hierarkey_form.py
index 954dcf9ec0..abf7371a6a 100644
--- a/src/pretix/control/templatetags/hierarkey_form.py
+++ b/src/pretix/control/templatetags/hierarkey_form.py
@@ -55,7 +55,7 @@ class PropagatedNode(Node):
                 </div>
                 <div class="panel-body help-text">
                     {text_expl}<br>
-                    <a href="{url}" target="_blank">
+                    <a href="{url}" target="_blank" class="btn btn-default">
                         {text_orga}
                     </a>
                 </div>
diff --git a/src/pretix/control/views/item.py b/src/pretix/control/views/item.py
index d677322b37..2cdec6efc6 100644
--- a/src/pretix/control/views/item.py
+++ b/src/pretix/control/views/item.py
@@ -1344,22 +1344,36 @@ class ItemUpdateGeneral(ItemDetailMixin, EventPermissionRequiredMixin, MetaDataE
     def form_valid(self, form):
         self.save_meta()
         messages.success(self.request, _('Your changes have been saved.'))
-        if form.has_changed() or any(f.has_changed() for f in self.plugin_forms):
-            data = {
-                k: form.cleaned_data.get(k)
-                for k in form.changed_data
-            }
-            for f in self.plugin_forms:
-                data.update({
-                    k: (f.cleaned_data.get(k).name
-                        if isinstance(f.cleaned_data.get(k), File)
-                        else f.cleaned_data.get(k))
-                    for k in f.changed_data
-                })
+
+        change_data = {
+            k: form.cleaned_data.get(k)
+            for k in form.changed_data
+        }
+        for f in self.plugin_forms:
+            change_data.update({
+                k: (f.cleaned_data.get(k).name
+                    if isinstance(f.cleaned_data.get(k), File)
+                    else f.cleaned_data.get(k))
+                for k in f.changed_data
+            })
+
+        meta_changed = {}
+        for f in self.meta_forms:
+            meta_changed.update({
+                k: (f.cleaned_data.get(k).name
+                    if isinstance(f.cleaned_data.get(k), File)
+                    else f.cleaned_data.get(k))
+                for k in f.changed_data
+            })
+        if meta_changed:
+            change_data['meta_data'] = meta_changed
+
+        if change_data:
             self.object.log_action(
-                'pretix.event.item.changed', user=self.request.user, data=data
+                'pretix.event.item.changed', user=self.request.user, data=change_data
             )
             invalidate_cache.apply_async(kwargs={'event': self.request.event.pk, 'item': self.object.pk})
+
         for f in self.plugin_forms:
             f.save()
 
diff --git a/src/pretix/control/views/orders.py b/src/pretix/control/views/orders.py
index efb4eb8a5f..bb3cf4775c 100644
--- a/src/pretix/control/views/orders.py
+++ b/src/pretix/control/views/orders.py
@@ -1186,13 +1186,17 @@ class OrderTransition(OrderView):
             if ps == Decimal('0.00') and self.order.pending_sum <= Decimal('0.00'):
                 p = self.order.payments.filter(state=OrderPayment.PAYMENT_STATE_CONFIRMED).last()
                 if p:
-                    p._mark_order_paid(
-                        user=self.request.user,
-                        send_mail=self.mark_paid_form.cleaned_data['send_email'],
-                        force=self.mark_paid_form.cleaned_data.get('force', False),
-                        payment_refund_sum=self.order.payment_refund_sum,
-                    )
-                    messages.success(self.request, _('The order has been marked as paid.'))
+                    try:
+                        p._mark_order_paid(
+                            user=self.request.user,
+                            send_mail=self.mark_paid_form.cleaned_data['send_email'],
+                            force=self.mark_paid_form.cleaned_data.get('force', False),
+                            payment_refund_sum=self.order.payment_refund_sum,
+                        )
+                    except Quota.QuotaExceededException as e:
+                        messages.error(self.request, str(e))
+                    else:
+                        messages.success(self.request, _('The order has been marked as paid.'))
                     return redirect(self.get_order_url())
 
             try:
diff --git a/src/pretix/control/views/pdf.py b/src/pretix/control/views/pdf.py
index 5fbb79bd31..38553a7b34 100644
--- a/src/pretix/control/views/pdf.py
+++ b/src/pretix/control/views/pdf.py
@@ -39,8 +39,8 @@ from django.utils.crypto import get_random_string
 from django.utils.timezone import now
 from django.utils.translation import gettext as _
 from django.views.generic import TemplateView
-from PyPDF2 import PdfFileReader, PdfFileWriter
-from PyPDF2.utils import PdfReadError
+from PyPDF2 import PdfReader, PdfWriter
+from PyPDF2.errors import PdfReadError
 from reportlab.lib.units import mm
 
 from pretix.base.i18n import language
@@ -153,9 +153,9 @@ class BaseEditorView(EventPermissionRequiredMixin, TemplateView):
 
     def post(self, request, *args, **kwargs):
         if "emptybackground" in request.POST:
-            p = PdfFileWriter()
+            p = PdfWriter()
             try:
-                p.addBlankPage(
+                p.add_blank_page(
                     width=float(request.POST.get('width')) * mm,
                     height=float(request.POST.get('height')) * mm,
                 )
@@ -203,7 +203,7 @@ class BaseEditorView(EventPermissionRequiredMixin, TemplateView):
 
             try:
                 bg_bytes = c.file.read()
-                PdfFileReader(BytesIO(bg_bytes), strict=False)
+                PdfReader(BytesIO(bg_bytes), strict=False)
             except PdfReadError as e:
                 return JsonResponse({
                     "status": "error",
diff --git a/src/pretix/control/views/typeahead.py b/src/pretix/control/views/typeahead.py
index 64977e69d9..0c89ae3372 100644
--- a/src/pretix/control/views/typeahead.py
+++ b/src/pretix/control/views/typeahead.py
@@ -228,9 +228,9 @@ def nav_context_list(request):
     if query:
         qs_orga = qs_orga.filter(Q(name__icontains=query) | Q(slug__icontains=query))
 
-    if query:
+    if query and len(query) >= 3:
         qs_orders = Order.objects.filter(
-            code__icontains=query
+            code__istartswith=query
         ).select_related('event', 'event__organizer').only('event', 'code', 'pk').order_by()
         if not request.user.has_active_staff_session(request.session.session_key):
             qs_orders = qs_orders.filter(
@@ -241,7 +241,7 @@ def nav_context_list(request):
             )
 
         qs_vouchers = Voucher.objects.filter(
-            code__icontains=query
+            code__istartswith=query
         ).select_related('event', 'event__organizer').only('event', 'code', 'pk').order_by()
         if not request.user.has_active_staff_session(request.session.session_key):
             qs_vouchers = qs_vouchers.filter(
diff --git a/src/pretix/multidomain/middlewares.py b/src/pretix/multidomain/middlewares.py
index 566700bfed..004a36ed61 100644
--- a/src/pretix/multidomain/middlewares.py
+++ b/src/pretix/multidomain/middlewares.py
@@ -43,6 +43,7 @@ from django.core.cache import cache
 from django.core.exceptions import DisallowedHost
 from django.http.request import split_domain_port
 from django.middleware.csrf import CsrfViewMiddleware as BaseCsrfMiddleware
+from django.shortcuts import render
 from django.urls import set_urlconf
 from django.utils.cache import patch_vary_headers
 from django.utils.deprecation import MiddlewareMixin
@@ -112,7 +113,15 @@ class MultiDomainMiddleware(MiddlewareMixin):
             elif settings.DEBUG or domain in LOCAL_HOST_NAMES:
                 request.urlconf = "pretix.multidomain.maindomain_urlconf"
             else:
-                raise DisallowedHost("Unknown host: %r" % host)
+                with scopes_disabled():
+                    is_fresh_install = not Event.objects.exists()
+                return render(request, '400_hostname.html', {
+                    'header_host': domain,
+                    'site_host': default_domain,
+                    'settings': settings,
+                    'xfh': request.headers.get('X-Forwarded-Host'),
+                    'is_fresh_install': is_fresh_install,
+                }, status=400)
         else:
             raise DisallowedHost("Invalid HTTP_HOST header: %r." % host)
 
diff --git a/src/pretix/plugins/badges/exporters.py b/src/pretix/plugins/badges/exporters.py
index c324cc10a3..fc1945886d 100644
--- a/src/pretix/plugins/badges/exporters.py
+++ b/src/pretix/plugins/badges/exporters.py
@@ -48,6 +48,7 @@ from django.db.models import Exists, OuterRef, Q
 from django.db.models.functions import Coalesce
 from django.utils.timezone import make_aware
 from django.utils.translation import gettext as _, gettext_lazy
+from PyPDF2 import Transformation
 from reportlab.lib import pagesizes
 from reportlab.lib.units import mm
 from reportlab.pdfgen import canvas
@@ -153,11 +154,19 @@ OPTIONS = OrderedDict([
         'offsets': [95 * mm, 55 * mm],
         'pagesize': pagesizes.A4,
     }),
+    ('herma_40x40', {
+        'name': 'HERMA 40 x 40 mm (9642)',
+        'cols': 4,
+        'rows': 6,
+        'margins': [13.5 * mm, 15 * mm, 13.5 * mm, 15 * mm],
+        'offsets': [46 * mm, 46 * mm],
+        'pagesize': pagesizes.A4,
+    }),
 ])
 
 
 def render_pdf(event, positions, opt):
-    from PyPDF2 import PdfFileReader, PdfFileWriter
+    from PyPDF2 import PdfReader, PdfWriter
     Renderer._register_fonts()
 
     renderermap = {
@@ -168,7 +177,7 @@ def render_pdf(event, positions, opt):
         default_renderer = _renderer(event, event.badge_layouts.get(default=True))
     except BadgeLayout.DoesNotExist:
         default_renderer = None
-    output_pdf_writer = PdfFileWriter()
+    output_pdf_writer = PdfWriter()
 
     any = False
     npp = opt['cols'] * opt['rows']
@@ -189,22 +198,19 @@ def render_pdf(event, positions, opt):
         p.showPage()
         p.save()
         buffer.seek(0)
-        canvas_pdf_reader = PdfFileReader(buffer)
-        empty_pdf_page = output_pdf_writer.addBlankPage(
-            width=opt['pagesize'][0] if opt['pagesize'] else positions[0][1].bg_pdf.getPage(0).mediaBox[2],
-            height=opt['pagesize'][1] if opt['pagesize'] else positions[0][1].bg_pdf.getPage(0).mediaBox[3],
+        canvas_pdf_reader = PdfReader(buffer)
+        empty_pdf_page = output_pdf_writer.add_blank_page(
+            width=opt['pagesize'][0] if opt['pagesize'] else positions[0][1].bg_pdf.pages[0].mediabox[2],
+            height=opt['pagesize'][1] if opt['pagesize'] else positions[0][1].bg_pdf.pages[0].mediabox[3],
         )
         for i, (op, r) in enumerate(positions):
-            bg_page = copy.copy(r.bg_pdf.getPage(0))
-            bg_page.trimBox = bg_page.mediaBox
+            bg_page = copy.copy(r.bg_pdf.pages[0])
+            bg_page.trimbox = bg_page.mediabox
             offsetx = opt['margins'][3] + (i % opt['cols']) * opt['offsets'][0]
             offsety = opt['margins'][2] + (opt['rows'] - 1 - i // opt['cols']) * opt['offsets'][1]
-            empty_pdf_page.mergeTranslatedPage(
-                bg_page,
-                tx=offsetx,
-                ty=offsety
-            )
-        empty_pdf_page.mergePage(canvas_pdf_reader.getPage(0))
+            bg_page.add_transformation(Transformation().translate(offsetx, offsety))
+            empty_pdf_page.merge_page(bg_page)
+        empty_pdf_page.merge_page(canvas_pdf_reader.pages[0])
 
     pagebuffer = []
     outbuffer = BytesIO()
@@ -221,7 +227,7 @@ def render_pdf(event, positions, opt):
     if pagebuffer:
         render_page(pagebuffer)
 
-    output_pdf_writer.addMetadata({
+    output_pdf_writer.add_metadata({
         '/Title': 'Badges',
         '/Creator': 'pretix',
     })
diff --git a/src/pretix/plugins/paypal2/payment.py b/src/pretix/plugins/paypal2/payment.py
index 505a671d02..bee42ad796 100644
--- a/src/pretix/plugins/paypal2/payment.py
+++ b/src/pretix/plugins/paypal2/payment.py
@@ -582,7 +582,7 @@ class PaypalMethod(BasePaymentProvider):
         on the 'confirm order' page.
         """
         template = get_template('pretixplugins/paypal2/checkout_payment_confirm.html')
-        ctx = {'request': request, 'event': self.event, 'settings': self.settings}
+        ctx = {'request': request, 'event': self.event, 'settings': self.settings, 'method': self.method}
         return template.render(ctx)
 
     def execute_payment(self, request: HttpRequest, payment: OrderPayment):
diff --git a/src/pretix/plugins/paypal2/signals.py b/src/pretix/plugins/paypal2/signals.py
index a35c458db9..e37d50143d 100644
--- a/src/pretix/plugins/paypal2/signals.py
+++ b/src/pretix/plugins/paypal2/signals.py
@@ -107,6 +107,7 @@ def html_head_presale(sender, request=None, **kwargs):
 
     if provider.settings.get('_enabled', as_type=bool) and (
             url.url_name == "event.order.pay.change" or
+            url.url_name == "event.order.pay" or
             (url.url_name == "event.checkout" and url.kwargs['step'] == "payment") or
             (url.namespace == "plugins:paypal2" and url.url_name == "pay")
     ):
@@ -137,6 +138,7 @@ def signal_process_response(sender, request: HttpRequest, response: HttpResponse
 
     if provider.settings.get('_enabled', as_type=bool) and (
             url.url_name == "event.order.pay.change" or
+            url.url_name == "event.order.pay" or
             (url.url_name == "event.checkout" and url.kwargs['step'] == "payment") or
             (url.namespace == "plugins:paypal2" and url.url_name == "pay")
     ):
diff --git a/src/pretix/plugins/paypal2/static/pretixplugins/paypal2/pretix-paypal.js b/src/pretix/plugins/paypal2/static/pretixplugins/paypal2/pretix-paypal.js
index adf3816caf..20acd921c2 100644
--- a/src/pretix/plugins/paypal2/static/pretixplugins/paypal2/pretix-paypal.js
+++ b/src/pretix/plugins/paypal2/static/pretixplugins/paypal2/pretix-paypal.js
@@ -141,11 +141,11 @@ var pretixpaypal = {
             pretixpaypal.restore();
         });
 
-        if ($("input[name=payment][value^='paypal']").is(':checked') || $(".payment-redo-form").length) {
+        if ($("input[name=payment][value^='paypal']").is(':checked')) {
             pretixpaypal.renderButton($("input[name=payment][value^='paypal']:checked").val());
-        }
-
-        if ($('#paypal-button-container').data('paypage')) {
+        } else if ($(".payment-redo-form").length) {
+            pretixpaypal.renderButton($("input[name=payment][value^='paypal']").val());
+        } else if ($('#paypal-button-container').data('paypage')) {
             pretixpaypal.renderButton('paypal_apm');
         }
     },
diff --git a/src/pretix/plugins/paypal2/views.py b/src/pretix/plugins/paypal2/views.py
index 2f920c0053..b0b4203097 100644
--- a/src/pretix/plugins/paypal2/views.py
+++ b/src/pretix/plugins/paypal2/views.py
@@ -283,7 +283,7 @@ def success(request, *args, **kwargs):
     else:
         payment = None
 
-    if request.session.get('payment_paypal_id', None):
+    if request.session.get('payment_paypal_oid', None):
         if payment:
             prov = Paypal(request.event)
             try:
@@ -296,7 +296,7 @@ def success(request, *args, **kwargs):
                 return resp
     else:
         messages.error(request, _('Invalid response from PayPal received.'))
-        logger.error('Session did not contain payment_paypal_id')
+        logger.error('Session did not contain payment_paypal_oid')
         urlkwargs['step'] = 'payment'
         return redirect(eventreverse(request.event, 'presale:event.checkout', kwargs=urlkwargs))
 
diff --git a/src/pretix/plugins/sendmail/signals.py b/src/pretix/plugins/sendmail/signals.py
index 6472a8c6d2..b5a572a07e 100644
--- a/src/pretix/plugins/sendmail/signals.py
+++ b/src/pretix/plugins/sendmail/signals.py
@@ -42,6 +42,7 @@ from django.db.models.signals import post_save
 from django.dispatch import receiver
 from django.urls import resolve, reverse
 from django.utils import timezone
+from django.utils.timezone import now
 from django.utils.translation import gettext_lazy as _
 from django_scopes import scope, scopes_disabled
 
@@ -134,6 +135,7 @@ def sendmail_run_rules(sender, **kwargs):
     with scopes_disabled():
         mails = ScheduledMail.objects.all()
 
+        unchanged = []
         for m in mails.filter(Q(last_computed__isnull=True)
                               | Q(subevent__last_modified__gt=F('last_computed'))
                               | Q(event__last_modified__gt=F('last_computed'))):
@@ -141,6 +143,17 @@ def sendmail_run_rules(sender, **kwargs):
             m.recompute()
             if m.computed_datetime != previous:
                 m.save(update_fields=['last_computed', 'computed_datetime'])
+            else:
+                unchanged.append(m.pk)
+
+        if unchanged:
+            # Theoretically, we don't need to write back the unchanged ones to the database… but that will cause us to
+            # recompute them on every run until eternity. So we want to set their last_computed date to something more
+            # recent... but not for all of them at once, in case it's millions, so we don't stress the database without
+            # cause
+            batch_size = max(connection.ops.bulk_batch_size(['id'], unchanged) - 2, 100)
+            for i in range(max(1, 5000 // batch_size)):
+                ScheduledMail.objects.filter(pk__in=unchanged[i * batch_size:batch_size]).update(last_computed=now())
 
         mails.filter(
             state=ScheduledMail.STATE_SCHEDULED,
diff --git a/src/pretix/plugins/stripe/payment.py b/src/pretix/plugins/stripe/payment.py
index 7d50f244fd..604ed49682 100644
--- a/src/pretix/plugins/stripe/payment.py
+++ b/src/pretix/plugins/stripe/payment.py
@@ -166,6 +166,11 @@ class StripeSettingsHolder(BasePaymentProvider):
                          label=_('Stripe account'),
                          disabled=True
                      )),
+                    ('connect_user_id',
+                     forms.CharField(
+                         label=_('Stripe account'),
+                         disabled=True
+                     )),
                     ('endpoint',
                      forms.ChoiceField(
                          label=_('Endpoint'),
diff --git a/src/pretix/plugins/ticketoutputpdf/exporters.py b/src/pretix/plugins/ticketoutputpdf/exporters.py
index f686f63000..cc1545b485 100644
--- a/src/pretix/plugins/ticketoutputpdf/exporters.py
+++ b/src/pretix/plugins/ticketoutputpdf/exporters.py
@@ -43,7 +43,7 @@ from django.db.models import Q
 from django.db.models.functions import Coalesce
 from django.utils.timezone import make_aware
 from django.utils.translation import gettext as _, gettext_lazy
-from PyPDF2.merger import PdfFileMerger
+from PyPDF2 import PdfMerger
 
 from pretix.base.exporter import BaseExporter
 from pretix.base.i18n import language
@@ -105,7 +105,7 @@ class AllTicketsPDF(BaseExporter):
         return d
 
     def render(self, form_data):
-        merger = PdfFileMerger()
+        merger = PdfMerger()
         qs = OrderPosition.objects.filter(
             order__event__in=self.events
         ).prefetch_related(
diff --git a/src/pretix/plugins/ticketoutputpdf/ticketoutput.py b/src/pretix/plugins/ticketoutputpdf/ticketoutput.py
index b05a8517ca..dd99310e73 100644
--- a/src/pretix/plugins/ticketoutputpdf/ticketoutput.py
+++ b/src/pretix/plugins/ticketoutputpdf/ticketoutput.py
@@ -44,7 +44,7 @@ from django.http import HttpRequest
 from django.template.loader import get_template
 from django.utils.functional import cached_property
 from django.utils.translation import gettext_lazy as _
-from PyPDF2 import PdfFileMerger
+from PyPDF2 import PdfMerger
 
 from pretix.base.i18n import language
 from pretix.base.models import Order, OrderPosition
@@ -112,7 +112,7 @@ class PdfTicketOutput(BaseTicketOutput):
         return renderer.render_background(buffer, _('Ticket'))
 
     def generate_order(self, order: Order):
-        merger = PdfFileMerger()
+        merger = PdfMerger()
         with language(order.locale, self.event.settings.region):
             for op in order.positions_with_tickets:
                 layout = override_layout.send_chained(
diff --git a/src/pretix/presale/forms/checkout.py b/src/pretix/presale/forms/checkout.py
index 3b67b59784..19b2d997b2 100644
--- a/src/pretix/presale/forms/checkout.py
+++ b/src/pretix/presale/forms/checkout.py
@@ -221,15 +221,13 @@ class MembershipForm(forms.Form):
         else:
             types = self.position.item.require_membership_types.all()
 
-        initial = None
-
         memberships = [
             m for m in self.memberships
             if m.is_valid(ev) and m.membership_type in types
         ]
 
         if len(memberships) == 1:
-            initial = str(memberships[0].pk)
+            self.initial['membership'] = str(memberships[0].pk)
 
         self.fields['membership'] = forms.ChoiceField(
             label=_('Membership'),
@@ -237,7 +235,6 @@ class MembershipForm(forms.Form):
                 (str(m.pk), self._label_from_instance(m))
                 for m in memberships
             ],
-            initial=initial,
             widget=forms.RadioSelect,
         )
         self.is_empty = not memberships
diff --git a/src/pretix/presale/templates/pretixpresale/event/fragment_product_list.html b/src/pretix/presale/templates/pretixpresale/event/fragment_product_list.html
index f8c600b0b6..cc60c07eb1 100644
--- a/src/pretix/presale/templates/pretixpresale/event/fragment_product_list.html
+++ b/src/pretix/presale/templates/pretixpresale/event/fragment_product_list.html
@@ -58,9 +58,9 @@
                                 {% endblocktrans %}
                                 </span>
                                 <span aria-hidden="true">{{ item.min_price|money:event.currency }} – {{ item.max_price|money:event.currency }}</span>
-                            {% elif not item.min_price and not item.max_price %}
+                            {% elif not item.min_price and not item.max_price and not item.mandatory_priced_addons %}
                                 <span class="text-uppercase">{% trans "free" context "price" %}</span>
-                            {% else %}
+                            {% elif not item.mandatory_priced_addons  %}
                                 {{ item.min_price|money:event.currency }}
                             {% endif %}
                         </div>
@@ -144,7 +144,9 @@
                                         </div>
                                         <p>
                                     {% elif not var.display_price.gross %}
-                                        <span class="text-uppercase">{% trans "free" context "price" %}</span>
+                                        {% if not item.mandatory_priced_addons %}
+                                            <span class="text-uppercase">{% trans "free" context "price" %}</span>
+                                        {% endif %}
                                     {% elif event.settings.display_net_prices %}
                                         {{ var.display_price.net|money:event.currency }}
                                     {% else %}
@@ -276,7 +278,9 @@
                             </div>
                             <p>
                         {% elif not item.display_price.gross %}
-                            <span class="text-uppercase">{% trans "free" context "price" %}</span>
+                            {% if not item.mandatory_priced_addons %}
+                                <span class="text-uppercase">{% trans "free" context "price" %}</span>
+                            {% endif %}
                         {% elif event.settings.display_net_prices %}
                             {{ item.display_price.net|money:event.currency }}
                         {% else %}
diff --git a/src/pretix/presale/templates/pretixpresale/event/index.html b/src/pretix/presale/templates/pretixpresale/event/index.html
index a1cf99ff7b..c8a8684156 100644
--- a/src/pretix/presale/templates/pretixpresale/event/index.html
+++ b/src/pretix/presale/templates/pretixpresale/event/index.html
@@ -27,7 +27,11 @@
 {% block custom_header %}
     {{ block.super }}
     <meta property="og:title" content="{{ ev.name }}" />
-    <meta property="og:description" content="{{ ev.get_date_range_display }}" />
+    {% if request.event.has_subevents and not subevent %}
+        <meta property="og:description" content="{% trans "Event series" %}" />
+    {% else %}
+        <meta property="og:description" content="{{ ev.get_date_range_display }}" />
+    {% endif %}
     {% if subevent %}
         <meta property="og:url" content="{% abseventurl request.event "presale:event.index" subevent=subevent.pk %}" />
     {% else %}
diff --git a/src/pretix/presale/urls.py b/src/pretix/presale/urls.py
index 7d03beae59..db39986e0b 100644
--- a/src/pretix/presale/urls.py
+++ b/src/pretix/presale/urls.py
@@ -93,6 +93,10 @@ event_patterns = [
             name='event.payment.unlock'),
     re_path(r'resend/$', pretix.presale.views.user.ResendLinkView.as_view(), name='event.resend_link'),
 
+    re_path(r'^favicon.ico/?$',
+            pretix.presale.views.organizer.OrganizerFavicon.as_view(),
+            name='event.favicon'),
+
     re_path(r'^order/(?P<order>[^/]+)/(?P<secret>[A-Za-z0-9]+)/open/(?P<hash>[a-z0-9]+)/$', pretix.presale.views.order.OrderOpen.as_view(),
             name='event.order.open'),
     re_path(r'^order/(?P<order>[^/]+)/(?P<secret>[A-Za-z0-9]+)/$', pretix.presale.views.order.OrderDetails.as_view(),
@@ -164,6 +168,9 @@ event_patterns = [
 
 organizer_patterns = [
     re_path(r'^$', pretix.presale.views.organizer.OrganizerIndex.as_view(), name='organizer.index'),
+    re_path(r'^favicon.ico/?$',
+            pretix.presale.views.organizer.OrganizerFavicon.as_view(),
+            name='organizer.favicon'),
     re_path(r'^events/ical/$',
             pretix.presale.views.organizer.OrganizerIcalDownload.as_view(),
             name='organizer.ical'),
diff --git a/src/pretix/presale/views/event.py b/src/pretix/presale/views/event.py
index 08577ae653..18b0658cee 100644
--- a/src/pretix/presale/views/event.py
+++ b/src/pretix/presale/views/event.py
@@ -65,7 +65,7 @@ from pretix.base.models import (
 )
 from pretix.base.models.event import SubEvent
 from pretix.base.models.items import (
-    ItemBundle, SubEventItem, SubEventItemVariation,
+    ItemAddOn, ItemBundle, SubEventItem, SubEventItemVariation,
 )
 from pretix.base.services.quotas import QuotaAvailability
 from pretix.helpers.compat import date_fromisocalendar
@@ -183,6 +183,13 @@ def get_grouped_items(event, subevent=None, voucher=None, channel='web', require
                 subevent=subevent,
             )
         ),
+        mandatory_priced_addons=Exists(
+            ItemAddOn.objects.filter(
+                base_item_id=OuterRef('pk'),
+                min_count__gte=1,
+                price_included=False
+            )
+        ),
         requires_seat=requires_seat,
     ).filter(
         quotac__gt=0, subevent_disabled=False,
diff --git a/src/pretix/presale/views/organizer.py b/src/pretix/presale/views/organizer.py
index 1a5d96ee9a..f76d78eccb 100644
--- a/src/pretix/presale/views/organizer.py
+++ b/src/pretix/presale/views/organizer.py
@@ -48,6 +48,7 @@ from django.db.models import Exists, Max, Min, OuterRef, Prefetch, Q
 from django.db.models.functions import Coalesce, Greatest
 from django.http import Http404, HttpResponse
 from django.shortcuts import redirect
+from django.templatetags.static import static
 from django.utils.decorators import method_decorator
 from django.utils.formats import date_format, get_format
 from django.utils.timezone import get_current_timezone, now
@@ -66,6 +67,7 @@ from pretix.helpers.daterange import daterange
 from pretix.helpers.formats.en.formats import (
     SHORT_MONTH_DAY_FORMAT, WEEK_FORMAT,
 )
+from pretix.helpers.thumb import get_thumbnail
 from pretix.multidomain.urlreverse import eventreverse
 from pretix.presale.ical import get_public_ical
 from pretix.presale.views import OrganizerViewMixin
@@ -1170,3 +1172,11 @@ class OrganizerIcalDownload(OrganizerViewMixin, View):
         if request.organizer.settings.meta_noindex:
             resp['X-Robots-Tag'] = 'noindex'
         return resp
+
+
+class OrganizerFavicon(View):
+    def get(self, *args, **kwargs):
+        if self.request.organizer.settings.favicon:
+            return redirect(get_thumbnail(self.request.organizer.settings.favicon, '32x32^').thumb.url)
+        else:
+            return redirect(static("pretixbase/img/favicon.ico"))
diff --git a/src/pretix/settings.py b/src/pretix/settings.py
index 1a68d21e99..f58bd0d532 100644
--- a/src/pretix/settings.py
+++ b/src/pretix/settings.py
@@ -170,7 +170,7 @@ PRETIX_SESSION_TIMEOUT_RELATIVE = 3600 * 3
 PRETIX_SESSION_TIMEOUT_ABSOLUTE = 3600 * 12
 PRETIX_PRIMARY_COLOR = '#8E44B3'
 
-SITE_URL = config.get('pretix', 'url', fallback='http://localhost')
+SITE_URL = config.get('pretix', 'url', fallback='http://localhost:8000')
 if SITE_URL.endswith('/'):
     SITE_URL = SITE_URL[:-1]
 
diff --git a/src/pretix/static/npm_dir/package-lock.json b/src/pretix/static/npm_dir/package-lock.json
index 671dbd69d3..87a57a1ac3 100644
--- a/src/pretix/static/npm_dir/package-lock.json
+++ b/src/pretix/static/npm_dir/package-lock.json
@@ -22,25 +22,25 @@
       }
     },
     "@babel/compat-data": {
-      "version": "7.17.10",
-      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.17.10.tgz",
-      "integrity": "sha512-GZt/TCsG70Ms19gfZO1tM4CVnXsPgEPBCpJu+Qz3L0LUDsY5nZqFZglIoPC1kIYOtNBZlrnFT+klg12vFGZXrw=="
+      "version": "7.18.8",
+      "resolved": "https://registry.npmjs.org/@babel/compat-data/-/compat-data-7.18.8.tgz",
+      "integrity": "sha512-HSmX4WZPPK3FUxYp7g2T6EyO8j96HlZJlxmKPSh6KAcqwyDrfx7hKjXpAW/0FhFfTJsR0Yt4lAjLI2coMptIHQ=="
     },
     "@babel/core": {
-      "version": "7.18.6",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.18.6.tgz",
-      "integrity": "sha512-cQbWBpxcbbs/IUredIPkHiAGULLV8iwgNRMFzvbhEXISp4f3rUUXE5+TIw6KwUWUR3DwyI6gmBRnmAtYaWehwQ==",
+      "version": "7.18.10",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.18.10.tgz",
+      "integrity": "sha512-JQM6k6ENcBFKVtWvLavlvi/mPcpYZ3+R+2EySDEMSMbp7Mn4FexlbbJVrx2R7Ijhr01T8gyqrOaABWIOgxeUyw==",
       "requires": {
         "@ampproject/remapping": "^2.1.0",
         "@babel/code-frame": "^7.18.6",
-        "@babel/generator": "^7.18.6",
-        "@babel/helper-compilation-targets": "^7.18.6",
-        "@babel/helper-module-transforms": "^7.18.6",
-        "@babel/helpers": "^7.18.6",
-        "@babel/parser": "^7.18.6",
-        "@babel/template": "^7.18.6",
-        "@babel/traverse": "^7.18.6",
-        "@babel/types": "^7.18.6",
+        "@babel/generator": "^7.18.10",
+        "@babel/helper-compilation-targets": "^7.18.9",
+        "@babel/helper-module-transforms": "^7.18.9",
+        "@babel/helpers": "^7.18.9",
+        "@babel/parser": "^7.18.10",
+        "@babel/template": "^7.18.10",
+        "@babel/traverse": "^7.18.10",
+        "@babel/types": "^7.18.10",
         "convert-source-map": "^1.7.0",
         "debug": "^4.1.0",
         "gensync": "^1.0.0-beta.2",
@@ -48,20 +48,121 @@
         "semver": "^6.3.0"
       },
       "dependencies": {
+        "@babel/generator": {
+          "version": "7.18.10",
+          "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.18.10.tgz",
+          "integrity": "sha512-0+sW7e3HjQbiHbj1NeU/vN8ornohYlacAfZIaXhdoGweQqgcNy69COVciYYqEXJ/v+9OBA7Frxm4CVAuNqKeNA==",
+          "requires": {
+            "@babel/types": "^7.18.10",
+            "@jridgewell/gen-mapping": "^0.3.2",
+            "jsesc": "^2.5.1"
+          }
+        },
+        "@babel/helper-compilation-targets": {
+          "version": "7.18.9",
+          "resolved": "https://registry.npmjs.org/@babel/helper-compilation-targets/-/helper-compilation-targets-7.18.9.tgz",
+          "integrity": "sha512-tzLCyVmqUiFlcFoAPLA/gL9TeYrF61VLNtb+hvkuVaB5SUjW7jcfrglBIX1vUIoT7CLP3bBlIMeyEsIl2eFQNg==",
+          "requires": {
+            "@babel/compat-data": "^7.18.8",
+            "@babel/helper-validator-option": "^7.18.6",
+            "browserslist": "^4.20.2",
+            "semver": "^6.3.0"
+          }
+        },
+        "@babel/helper-environment-visitor": {
+          "version": "7.18.9",
+          "resolved": "https://registry.npmjs.org/@babel/helper-environment-visitor/-/helper-environment-visitor-7.18.9.tgz",
+          "integrity": "sha512-3r/aACDJ3fhQ/EVgFy0hpj8oHyHpQc+LPtJoY9SzTThAsStm4Ptegq92vqKoE3vD706ZVFWITnMnxucw+S9Ipg=="
+        },
+        "@babel/helper-function-name": {
+          "version": "7.18.9",
+          "resolved": "https://registry.npmjs.org/@babel/helper-function-name/-/helper-function-name-7.18.9.tgz",
+          "integrity": "sha512-fJgWlZt7nxGksJS9a0XdSaI4XvpExnNIgRP+rVefWh5U7BL8pPuir6SJUmFKRfjWQ51OtWSzwOxhaH/EBWWc0A==",
+          "requires": {
+            "@babel/template": "^7.18.6",
+            "@babel/types": "^7.18.9"
+          }
+        },
+        "@babel/helper-module-imports": {
+          "version": "7.18.6",
+          "resolved": "https://registry.npmjs.org/@babel/helper-module-imports/-/helper-module-imports-7.18.6.tgz",
+          "integrity": "sha512-0NFvs3VkuSYbFi1x2Vd6tKrywq+z/cLeYC/RJNFrIX/30Bf5aiGYbtvGXolEktzJH8o5E5KJ3tT+nkxuuZFVlA==",
+          "requires": {
+            "@babel/types": "^7.18.6"
+          }
+        },
+        "@babel/helper-module-transforms": {
+          "version": "7.18.9",
+          "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.18.9.tgz",
+          "integrity": "sha512-KYNqY0ICwfv19b31XzvmI/mfcylOzbLtowkw+mfvGPAQ3kfCnMLYbED3YecL5tPd8nAYFQFAd6JHp2LxZk/J1g==",
+          "requires": {
+            "@babel/helper-environment-visitor": "^7.18.9",
+            "@babel/helper-module-imports": "^7.18.6",
+            "@babel/helper-simple-access": "^7.18.6",
+            "@babel/helper-split-export-declaration": "^7.18.6",
+            "@babel/helper-validator-identifier": "^7.18.6",
+            "@babel/template": "^7.18.6",
+            "@babel/traverse": "^7.18.9",
+            "@babel/types": "^7.18.9"
+          }
+        },
         "@babel/helper-validator-identifier": {
           "version": "7.18.6",
           "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.18.6.tgz",
           "integrity": "sha512-MmetCkz9ej86nJQV+sFCxoGGrUbU3q02kgLciwkrt9QqEB7cP39oKEY0PakknEO0Gu20SskMRi+AYZ3b1TpN9g=="
         },
-        "@babel/types": {
-          "version": "7.18.7",
-          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.18.7.tgz",
-          "integrity": "sha512-QG3yxTcTIBoAcQmkCs+wAPYZhu7Dk9rXKacINfNbdJDNERTbLQbHGyVG8q/YGMPeCJRIhSY0+fTc5+xuh6WPSQ==",
+        "@babel/parser": {
+          "version": "7.18.11",
+          "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.18.11.tgz",
+          "integrity": "sha512-9JKn5vN+hDt0Hdqn1PiJ2guflwP+B6Ga8qbDuoF0PzzVhrzsKIJo8yGqVk6CmMHiMei9w1C1Bp9IMJSIK+HPIQ=="
+        },
+        "@babel/template": {
+          "version": "7.18.10",
+          "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.18.10.tgz",
+          "integrity": "sha512-TI+rCtooWHr3QJ27kJxfjutghu44DLnasDMwpDqCXVTal9RLp3RSYNh4NdBrRP2cQAoG9A8juOQl6P6oZG4JxA==",
           "requires": {
+            "@babel/code-frame": "^7.18.6",
+            "@babel/parser": "^7.18.10",
+            "@babel/types": "^7.18.10"
+          }
+        },
+        "@babel/traverse": {
+          "version": "7.18.11",
+          "resolved": "https://registry.npmjs.org/@babel/traverse/-/traverse-7.18.11.tgz",
+          "integrity": "sha512-TG9PiM2R/cWCAy6BPJKeHzNbu4lPzOSZpeMfeNErskGpTJx6trEvFaVCbDvpcxwy49BKWmEPwiW8mrysNiDvIQ==",
+          "requires": {
+            "@babel/code-frame": "^7.18.6",
+            "@babel/generator": "^7.18.10",
+            "@babel/helper-environment-visitor": "^7.18.9",
+            "@babel/helper-function-name": "^7.18.9",
+            "@babel/helper-hoist-variables": "^7.18.6",
+            "@babel/helper-split-export-declaration": "^7.18.6",
+            "@babel/parser": "^7.18.11",
+            "@babel/types": "^7.18.10",
+            "debug": "^4.1.0",
+            "globals": "^11.1.0"
+          }
+        },
+        "@babel/types": {
+          "version": "7.18.10",
+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.18.10.tgz",
+          "integrity": "sha512-MJvnbEiiNkpjo+LknnmRrqbY1GPUUggjv+wQVjetM/AONoupqRALB7I6jGqNUAZsKcRIEu2J6FRFvsczljjsaQ==",
+          "requires": {
+            "@babel/helper-string-parser": "^7.18.10",
             "@babel/helper-validator-identifier": "^7.18.6",
             "to-fast-properties": "^2.0.0"
           }
         },
+        "@jridgewell/gen-mapping": {
+          "version": "0.3.2",
+          "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.2.tgz",
+          "integrity": "sha512-mh65xKQAzI6iBcFzwv28KVWSmCkdRBWoOh+bYQGW3+6OZvbbN3TqMGo5hqYxQniRcH9F2VZIoJCm4pa3BPDK/A==",
+          "requires": {
+            "@jridgewell/set-array": "^1.0.1",
+            "@jridgewell/sourcemap-codec": "^1.4.10",
+            "@jridgewell/trace-mapping": "^0.3.9"
+          }
+        },
         "json5": {
           "version": "2.2.1",
           "resolved": "https://registry.npmjs.org/json5/-/json5-2.2.1.tgz",
@@ -134,9 +235,9 @@
           "integrity": "sha512-MmetCkz9ej86nJQV+sFCxoGGrUbU3q02kgLciwkrt9QqEB7cP39oKEY0PakknEO0Gu20SskMRi+AYZ3b1TpN9g=="
         },
         "@babel/types": {
-          "version": "7.18.7",
-          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.18.7.tgz",
-          "integrity": "sha512-QG3yxTcTIBoAcQmkCs+wAPYZhu7Dk9rXKacINfNbdJDNERTbLQbHGyVG8q/YGMPeCJRIhSY0+fTc5+xuh6WPSQ==",
+          "version": "7.18.9",
+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.18.9.tgz",
+          "integrity": "sha512-WwMLAg2MvJmt/rKEVQBBhIVffMmnilX4oe0sRe7iPOHIGsqpruFHHdrfj4O1CMMtgMtCU4oPafZjDPCRgO57Wg==",
           "requires": {
             "@babel/helper-validator-identifier": "^7.18.6",
             "to-fast-properties": "^2.0.0"
@@ -150,12 +251,12 @@
       }
     },
     "@babel/helper-builder-binary-assignment-operator-visitor": {
-      "version": "7.18.6",
-      "resolved": "https://registry.npmjs.org/@babel/helper-builder-binary-assignment-operator-visitor/-/helper-builder-binary-assignment-operator-visitor-7.18.6.tgz",
-      "integrity": "sha512-KT10c1oWEpmrIRYnthbzHgoOf6B+Xd6a5yhdbNtdhtG7aO1or5HViuf1TQR36xY/QprXA5nvxO6nAjhJ4y38jw==",
+      "version": "7.18.9",
+      "resolved": "https://registry.npmjs.org/@babel/helper-builder-binary-assignment-operator-visitor/-/helper-builder-binary-assignment-operator-visitor-7.18.9.tgz",
+      "integrity": "sha512-yFQ0YCHoIqarl8BCRwBL8ulYUaZpz3bNsA7oFepAzee+8/+ImtADXNOmO5vJvsPff3qi+hvpkY/NYBTrBQgdNw==",
       "requires": {
         "@babel/helper-explode-assignable-expression": "^7.18.6",
-        "@babel/types": "^7.18.6"
+        "@babel/types": "^7.18.9"
       },
       "dependencies": {
         "@babel/helper-validator-identifier": {
@@ -164,9 +265,9 @@
           "integrity": "sha512-MmetCkz9ej86nJQV+sFCxoGGrUbU3q02kgLciwkrt9QqEB7cP39oKEY0PakknEO0Gu20SskMRi+AYZ3b1TpN9g=="
         },
         "@babel/types": {
-          "version": "7.18.7",
-          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.18.7.tgz",
-          "integrity": "sha512-QG3yxTcTIBoAcQmkCs+wAPYZhu7Dk9rXKacINfNbdJDNERTbLQbHGyVG8q/YGMPeCJRIhSY0+fTc5+xuh6WPSQ==",
+          "version": "7.18.9",
+          "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.18.9.tgz",
+          "integrity": "sha512-WwMLAg2MvJmt/rKEVQBBhIVffMmnilX4oe0sRe7iPOHIGsqpruFHHdrfj4O1CMMtgMtCU4oPafZjDPCRgO57Wg==",
           "requires": {
             "@babel/helper-validator-identifier": "^7.18.6",
             "to-fast-properties": "^2.0.0"
@@ -208,30 +309,31 @@
       }
     },
     "@babel/helper-create-class-features-plugin": {
-      "version": "7.18.6",
-      "resolved": "https://registry.npmjs.org/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.18.6.tgz",
-      "integrity": "sha512-YfDzdnoxHGV8CzqHGyCbFvXg5QESPFkXlHtvdCkesLjjVMT2Adxe4FGUR5ChIb3DxSaXO12iIOCWoXdsUVwnqw==",
+      "version": "7.18.9",
+      "resolved": "https://registry.npmjs.org/@babel/helper-create-class-features-plugin/-/helper-create-class-features-plugin-7.18.9.tgz",
+      "integrity": "sha512-WvypNAYaVh23QcjpMR24CwZY2Nz6hqdOcFdPbNpV56hL5H6KiFheO7Xm1aPdlLQ7d5emYZX7VZwPp9x3z+2opw==",
       "requires": {
         "@babel/helper-annotate-as-pure": "^7.18.6",
-        "@babel/helper-environment-visitor": "^7.18.6",
-        "@babel/helper-function-name": "^7.18.6",
-        "@babel/helper-member-expression-to-functions": "^7.18.6",
+        "@babel/helper-environment-visitor": "^7.18.9",
+        "@babel/helper-function-name": "^7.18.9",
+        "@babel/helper-member-expression-to-functions": "^7.18.9",
         "@babel/helper-optimise-call-expression": "^7.18.6",
-        "@babel/helper-replace-supers": "^7.18.6",
+        "@babel/helper-replace-supers": "^7.18.9",
         "@babel/helper-split-export-declaration": "^7.18.6"
       },
       "dependencies": {
         "@babel/helper-environment-visitor": {
-          "version": "7.18.6",
-          "resolved": "https://registry.npmjs.org/@babel/helper-environment-visitor/-/helper-environment-visitor-7.18.6.tgz",
-          "integrity": "sha512-8n6gSfn2baOY+qlp+VSzsosjCVGFqWKmDF0cCWOybh52Dw3SEyoWR1KrhMJASjLwIEkkAufZ0xvr+SxLHSpy2Q=="
+          "version": "7.18.9",
+          "resolved": "https://registry.npmjs.org/@babel/helper-environment-visitor/-/helper-environment-visitor-7.18.9.tgz",
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+            "update-browserslist-db": "^1.0.5"
           }
         },
         "caniuse-lite": {
-          "version": "1.0.30001361",
-          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001361.tgz",
-          "integrity": "sha512-ybhCrjNtkFji1/Wto6SSJKkWk6kZgVQsDq5QI83SafsF6FXv2JB4df9eEdH6g8sdGgqTXrFLjAxqBGgYoU3azQ=="
+          "version": "1.0.30001373",
+          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001373.tgz",
+          "integrity": "sha512-pJYArGHrPp3TUqQzFYRmP/lwJlj8RCbVe3Gd3eJQkAV8SAC6b19XS9BjMvRdvaS8RMkaTN8ZhoHP6S1y8zzwEQ=="
         },
         "electron-to-chromium": {
-          "version": "1.4.176",
-          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.176.tgz",
-          "integrity": "sha512-92JdgyRlcNDwuy75MjuFSb3clt6DGJ2IXSpg0MCjKd3JV9eSmuUAIyWiGAp/EtT0z2D4rqbYqThQLV90maH3Zw=="
+          "version": "1.4.206",
+          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.4.206.tgz",
+          "integrity": "sha512-h+Fadt1gIaQ06JaIiyqPsBjJ08fV5Q7md+V8bUvQW/9OvXfL2LRICTz2EcnnCP7QzrFTS6/27MRV6Bl9Yn97zA=="
+        },
+        "node-releases": {
+          "version": "2.0.6",
+          "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-2.0.6.tgz",
+          "integrity": "sha512-PiVXnNuFm5+iYkLBNeq5211hvO38y63T0i2KKh2KnUs3RpzJ+JtODFjkD8yjLwnDkTYF1eKXheUwdssR+NRZdg=="
         },
         "semver": {
           "version": "7.0.0",
@@ -3747,9 +3769,9 @@
       }
     },
     "rollup": {
-      "version": "2.75.7",
-      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.75.7.tgz",
-      "integrity": "sha512-VSE1iy0eaAYNCxEXaleThdFXqZJ42qDBatAwrfnPlENEZ8erQ+0LYX4JXOLPceWfZpV1VtZwZ3dFCuOZiSyFtQ==",
+      "version": "2.77.2",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.77.2.tgz",
+      "integrity": "sha512-m/4YzYgLcpMQbxX3NmAqDvwLATZzxt8bIegO78FZLl+lAgKJBd1DRAOeEiZcKOIOPjxE6ewHWHNgGEalFXuz1g==",
       "requires": {
         "fsevents": "~2.3.2"
       }
@@ -3980,9 +4002,9 @@
       "integrity": "sha1-sxxa6CVIRKOoKBVBzisEuGWnNP8="
     },
     "update-browserslist-db": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/update-browserslist-db/-/update-browserslist-db-1.0.4.tgz",
-      "integrity": "sha512-jnmO2BEGUjsMOe/Fg9u0oczOe/ppIDZPebzccl1yDWGLFP16Pa1/RM5wEoKYPG2zstNcDuAStejyxsOuKINdGA==",
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/update-browserslist-db/-/update-browserslist-db-1.0.5.tgz",
+      "integrity": "sha512-dteFFpCyvuDdr9S/ff1ISkKt/9YZxKjI9WlRR99c180GaztJtRa/fn18FdxGVKVsnPY7/a/FDN68mcvUmP4U7Q==",
       "requires": {
         "escalade": "^3.1.1",
         "picocolors": "^1.0.0"
@@ -4006,11 +4028,11 @@
       "optional": true
     },
     "vue": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/vue/-/vue-2.7.0.tgz",
-      "integrity": "sha512-su25f1hocH+QNkVEqk+Oj7B+mkDIWU70l0YY7nYSJFEs3Z64njXxo65RUXnWH46ooEhKmEWyLdW6HcYn8coNrg==",
+      "version": "2.7.8",
+      "resolved": "https://registry.npmjs.org/vue/-/vue-2.7.8.tgz",
+      "integrity": "sha512-ncwlZx5qOcn754bCu5/tS/IWPhXHopfit79cx+uIlLMyt3vCMGcXai5yCG5y+I6cDmEj4ukRYyZail9FTQh7lQ==",
       "requires": {
-        "@vue/compiler-sfc": "2.7.0",
+        "@vue/compiler-sfc": "2.7.8",
         "csstype": "^3.1.0"
       }
     },
@@ -4020,9 +4042,9 @@
       "integrity": "sha512-pZfGp+PW/IXEOyETE09xQHR1CKkR9HfHZdnMD/FVLUNI+HxYTa82evx5WrF6Kz4s82qtqHvMZ8MZpbk2zT2E1Q=="
     },
     "vue-template-compiler": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/vue-template-compiler/-/vue-template-compiler-2.7.0.tgz",
-      "integrity": "sha512-b9kKOPNS6J2BVf9skXkKsUwQLP3Bjfb/gG6UoBt3fn4xUVEDko5TSWmkPGW6dSSeAOOvYEMALdouv9caKlTq0Q==",
+      "version": "2.7.8",
+      "resolved": "https://registry.npmjs.org/vue-template-compiler/-/vue-template-compiler-2.7.8.tgz",
+      "integrity": "sha512-eQqdcUpJKJpBRPDdxCNsqUoT0edNvdt1jFjtVnVS/LPPmr0BU2jWzXlrf6BVMeODtdLewB3j8j3WjNiB+V+giw==",
       "requires": {
         "de-indent": "^1.0.2",
         "he": "^1.2.0"
diff --git a/src/pretix/static/npm_dir/package.json b/src/pretix/static/npm_dir/package.json
index f1eaad2ea7..0adf9cf6c9 100644
--- a/src/pretix/static/npm_dir/package.json
+++ b/src/pretix/static/npm_dir/package.json
@@ -4,13 +4,13 @@
   "private": true,
   "scripts": {},
   "dependencies": {
-    "@babel/core": "^7.18.6",
-    "@babel/preset-env": "^7.18.6",
+    "@babel/core": "^7.18.10",
+    "@babel/preset-env": "^7.18.9",
     "@rollup/plugin-babel": "^5.3.1",
     "@rollup/plugin-node-resolve": "^13.3.0",
-    "vue": "^2.7.0",
-    "rollup": "^2.75.7",
+    "vue": "^2.7.8",
+    "rollup": "^2.77.2",
     "rollup-plugin-vue": "^5.0.1",
-    "vue-template-compiler": "^2.7.0"
+    "vue-template-compiler": "^2.7.8"
   }
 }
diff --git a/src/pretix/static/pretixcontrol/js/ui/editor.js b/src/pretix/static/pretixcontrol/js/ui/editor.js
index 381e10eeac..f2b5a33f4f 100644
--- a/src/pretix/static/pretixcontrol/js/ui/editor.js
+++ b/src/pretix/static/pretixcontrol/js/ui/editor.js
@@ -300,7 +300,6 @@ var editor = {
 
         // Fetch the required page
         editor.pdf.getPage(page_number).then(function (page) {
-            console.log('Page loaded');
             var canvas = document.getElementById('pdf-canvas');
 
             var scale = editor.$cva.width() / page.getViewport(1.0).width;
@@ -326,7 +325,6 @@ var editor = {
                 editor.pdf_page_number = page_number
                 editor._init_page_nav();
 
-                console.log('Page rendered');
                 if (dump || !editor._fabric_loaded) {
                     editor._init_fabric(dump);
                 } else {
@@ -349,7 +347,6 @@ var editor = {
                 }
                 $("#page_nav").append($li)
                 $a.on("click", function (event) {
-                    console.log("switch to page", $(this).attr("data-page"));
                     editor.fabric.deactivateAll();
                     editor._load_page(parseInt($(this).attr("data-page")));
                     event.preventDefault();
@@ -369,7 +366,6 @@ var editor = {
         // Asynchronous download of PDF
         var loadingTask = PDFJS.getDocument(url);
         loadingTask.promise.then(function (pdf) {
-            console.log('PDF loaded');
 
             editor.pdf = pdf;
             editor.pdf_page_count = pdf.numPages;
@@ -422,7 +418,6 @@ var editor = {
         }
 
         editor._fabric_loaded = true;
-        console.log("Fabric loaded");
         if (editor._window_loaded) {
             editor._ready();
         }
@@ -430,7 +425,6 @@ var editor = {
 
     _window_load_event: function () {
         editor._window_loaded = true;
-        console.log("Window loaded");
         if (editor._fabric_loaded) {
             editor._ready();
         }
@@ -520,7 +514,7 @@ var editor = {
         }
     },
 
-    _update_values_from_toolbox: function () {
+    _update_values_from_toolbox: function (e) {
         var o = editor.fabric.getActiveObject();
         if (!o) {
             o = editor.fabric.getActiveGroup();
@@ -553,8 +547,16 @@ var editor = {
             $("#toolbox-content-other-help").toggle($("#toolbox-content").val() === "other" || $("#toolbox-content").val() === "other_i18n");
             o.content = $("#toolbox-content").val();
             if ($("#toolbox-content").val() === "other") {
+                if (e.target.id === "toolbox-content") {
+                    // user used dropdown to switch content-type, update value with value from i18n textarea
+                    $("#toolbox-content-other").val($("#toolbox-content-other-i18n textarea").val());
+                }
                 o.text = $("#toolbox-content-other").val();
             } else if ($("#toolbox-content").val() === "other_i18n") {
+                if (e.target.id === "toolbox-content") {
+                    // user used dropdown to switch content-type, update value with value from "other" textarea
+                    $("#toolbox-content-other-i18n textarea").val($("#toolbox-content-other").val());
+                }
                 o.text_i18n = {}
                 $("#toolbox-content-other-i18n textarea").each(function () {
                     o.text_i18n[$(this).attr("lang")] = $(this).val();
@@ -608,8 +610,16 @@ var editor = {
             $("#toolbox-content-other-help").toggle($("#toolbox-content").val() === "other" || $("#toolbox-content").val() === "other_i18n");
             o.content = $("#toolbox-content").val();
             if ($("#toolbox-content").val() === "other") {
+                if (e.target.id === "toolbox-content") {
+                    // user used dropdown to switch content-type, update value with value from i18n textarea
+                    $("#toolbox-content-other").val($("#toolbox-content-other-i18n textarea").val());
+                }
                 o.setText($("#toolbox-content-other").val());
             } else if ($("#toolbox-content").val() === "other_i18n") {
+                if (e.target.id === "toolbox-content") {
+                    // user used dropdown to switch content-type, update value with value from "other" textarea
+                    $("#toolbox-content-other-i18n textarea").val($("#toolbox-content-other").val());
+                }
                 o.text_i18n = {}
                 $("#toolbox-content-other-i18n textarea").each(function () {
                     o.text_i18n[$(this).attr("lang")] = $(this).val();
@@ -620,6 +630,14 @@ var editor = {
             }
         }
 
+        // empty text-inputs if not in use
+        if ($("#toolbox-content").val() !== "other") {
+            $("#toolbox-content-other").val("");
+        }
+        if ($("#toolbox-content").val() !== "other_i18n") {
+            $("#toolbox-content-other-i18n textarea").val("");
+        }
+
         o.setCoords();
         editor.fabric.renderAll();
     },
@@ -1055,14 +1073,14 @@ var editor = {
         $("#toolbox label.btn").bind('click change', editor._update_values_from_toolbox);
         $("#toolbox select").bind('change', editor._update_values_from_toolbox);
         $("#toolbox select").bind('change', editor._create_savepoint);
-        $("#toolbox button.toggling").bind('click change', function () {
+        $("#toolbox button.toggling").bind('click change', function (e) {
             if ($(this).is(".option")) {
                 $(this).addClass("active");
                 $(this).parent().siblings().find("button").removeClass("active");
             } else {
                 $(this).toggleClass("active");
             }
-            editor._update_values_from_toolbox();
+            editor._update_values_from_toolbox(e);
             editor._create_savepoint();
         });
         $("#toolbox .colorpickerfield").bind('changeColor', editor._update_values_from_toolbox);
diff --git a/src/pretix/static/pretixcontrol/js/ui/main.js b/src/pretix/static/pretixcontrol/js/ui/main.js
index 970b97fd76..79a44ec37d 100644
--- a/src/pretix/static/pretixcontrol/js/ui/main.js
+++ b/src/pretix/static/pretixcontrol/js/ui/main.js
@@ -665,33 +665,8 @@ var form_handlers = function (el) {
     questions_init_photos(el);
 };
 
-$(function () {
-    "use strict";
-
-    $("body").removeClass("nojs");
-    lightbox.init();
-
-    $(document).on("click", ".variations .variations-select-all", function (e) {
-        $(this).parent().parent().find("input[type=checkbox]").prop("checked", true).change();
-        e.stopPropagation();
-        return false;
-    });
-    $(document).on("click", ".variations .variations-select-none", function (e) {
-        $(this).parent().parent().find("input[type=checkbox]").prop("checked", false).change();
-        e.stopPropagation();
-        return false;
-    });
-    if ($(".items-on-quota").length) {
-        $(".items-on-quota .panel").each(function () {
-            var $panel = $(this);
-            $panel.toggleClass("panel-success", $panel.find("input:checked").length > 0);
-            $(this).find("input").change(function () {
-                $panel.toggleClass("panel-success", $panel.find("input:checked").length > 0);
-            });
-        });
-    }
-
-    $("#sumtoggle").find("button").click(function () {
+function setup_basics(el) {
+    el.find("#sumtoggle").find("button").click(function () {
         $(".table-product-overview .sum-gross").toggle($(this).attr("data-target") === ".sum-gross");
         $(".table-product-overview .sum-net").toggle($(this).attr("data-target") === ".sum-net");
         $(".table-product-overview .count").toggle($(this).attr("data-target") === ".count");
@@ -700,18 +675,18 @@ $(function () {
         $(this).addClass("active");
     });
 
-    $('.collapsible').collapse();
-    $("input[data-toggle=radiocollapse]").change(function () {
+    el.find('.collapsible').collapse();
+    el.find("input[data-toggle=radiocollapse]").change(function () {
         $($(this).attr("data-parent")).find(".collapse.in").collapse('hide');
         $($(this).attr("data-target")).collapse('show');
     });
-    $("div.collapsed").removeClass("collapsed").addClass("collapse");
-    $(".has-error").each(function () {
+    el.find("div.collapsed").removeClass("collapsed").addClass("collapse");
+    el.find(".has-error").each(function () {
         $(this).closest("div.panel-collapse").collapse("show");
     });
 
-    $('[data-toggle="tooltip"]').tooltip();
-    $('[data-toggle="tooltip_html"]').tooltip({
+    el.find('[data-toggle="tooltip"]').tooltip();
+    el.find('[data-toggle="tooltip_html"]').tooltip({
         'html': true,
         'whiteList': {
             // Global attributes allowed on any supplied element below.
@@ -733,7 +708,7 @@ $(function () {
     if (url.match('#')) {
         $('.nav-tabs a[href="#' + url.split('#')[1] + '"]').tab('show');
     }
-    $('a[data-toggle="tab"]').on('click', function (e) {
+    el.find('a[data-toggle="tab"]').on('click', function (e) {
         if (!$(this).closest(".tab-content").length) {
             // only append hash if not inside a .panel
             window.location.hash = this.hash;
@@ -741,7 +716,7 @@ $(function () {
     });
 
     // Event wizard
-    $("#event-slug-random-generate").click(function () {
+    el.find("#event-slug-random-generate").click(function () {
         var url = $(this).attr("data-rng-url");
         $("#id_basics-slug").val("Generating...");
         $.getJSON(url, function (data) {
@@ -749,10 +724,7 @@ $(function () {
         });
     });
 
-    form_handlers($("body"));
-    $(document).trigger("pretix:bind-forms");
-
-    $(".qrcode-canvas").each(function () {
+    el.find(".qrcode-canvas").each(function () {
         $(this).qrcode(
             {
                 text: $.trim($($(this).attr("data-qrdata")).html())
@@ -760,10 +732,10 @@ $(function () {
         );
     });
 
-    $(".propagated-settings-box").find("input, textarea, select").not("[readonly]")
+    el.find(".propagated-settings-box").find("input, textarea, select").not("[readonly]")
         .attr("data-propagated-locked", "true").prop("readonly", true);
 
-    $(".propagated-settings-box button[data-action=unlink]").click(function (ev) {
+    el.find(".propagated-settings-box button[data-action=unlink]").click(function (ev) {
         var $box = $(this).closest(".propagated-settings-box");
         $box.find("input[name=decouple]").val($(this).val());
         $box.find("[data-propagated-locked]").prop("readonly", false);
@@ -773,7 +745,7 @@ $(function () {
     });
 
     // Tables with bulk selection, e.g. subevent list
-    $("input[data-toggle-table]").each(function (ev) {
+    el.find("input[data-toggle-table]").each(function (ev) {
         var $toggle = $(this);
         var $actionButtons = $(".batch-select-actions button", this.form);
         var countLabels = $("<span></span>").appendTo($actionButtons);
@@ -852,7 +824,7 @@ $(function () {
             if (!nrOfChecked) countLabels.empty();
             else countLabels.text(" ("+nrOfChecked+")");
 
-            if (!allChecked) $selectAll.find("input").prop("checked", false); 
+            if (!allChecked) $selectAll.find("input").prop("checked", false);
 
             $actionButtons.attr("disabled", !nrOfChecked);
             $toggle.prop("checked", allChecked).prop("indeterminate", nrOfChecked > 0 && !allChecked);
@@ -875,7 +847,7 @@ $(function () {
     });
 
     // Items and categories
-    $(".internal-name-wrapper").each(function () {
+    el.find(".internal-name-wrapper").each(function () {
         if ($(this).find("input").val() === "") {
             var $fg = $(this).find(".form-group");
             $fg.hide();
@@ -896,7 +868,7 @@ $(function () {
         }
     });
 
-    $("button[data-toggle=qrcode]").click(function (e) {
+    el.find("button[data-toggle=qrcode]").click(function (e) {
         e.preventDefault();
         var $current = $(".qr-code-overlay[data-qrcode='" + $(this).attr("data-qrcode") + "']");
         if ($current.length) {
@@ -926,6 +898,37 @@ $(function () {
         });
         return false;
     });
+}
+
+$(function () {
+    "use strict";
+
+    $("body").removeClass("nojs");
+    lightbox.init();
+
+    $(document).on("click", ".variations .variations-select-all", function (e) {
+        $(this).parent().parent().find("input[type=checkbox]").prop("checked", true).change();
+        e.stopPropagation();
+        return false;
+    });
+    $(document).on("click", ".variations .variations-select-none", function (e) {
+        $(this).parent().parent().find("input[type=checkbox]").prop("checked", false).change();
+        e.stopPropagation();
+        return false;
+    });
+    if ($(".items-on-quota").length) {
+        $(".items-on-quota .panel").each(function () {
+            var $panel = $(this);
+            $panel.toggleClass("panel-success", $panel.find("input:checked").length > 0);
+            $(this).find("input").change(function () {
+                $panel.toggleClass("panel-success", $panel.find("input:checked").length > 0);
+            });
+        });
+    }
+
+    setup_basics($("body"));
+    form_handlers($("body"));
+    $(document).trigger("pretix:bind-forms");
 
     $("#ajaxerr").on("click", ".ajaxerr-close", ajaxErrDialog.hide);
     moment.locale($("body").attr("data-datetimelocale"));
diff --git a/src/pretix/static/pretixcontrol/js/ui/typeahead.js b/src/pretix/static/pretixcontrol/js/ui/typeahead.js
index 1e10f53ca5..b3067706f0 100644
--- a/src/pretix/static/pretixcontrol/js/ui/typeahead.js
+++ b/src/pretix/static/pretixcontrol/js/ui/typeahead.js
@@ -12,13 +12,8 @@ $(function () {
         var $query = $(this).find('[data-typeahead-query]').length ? $(this).find('[data-typeahead-query]') : $($(this).attr("data-typeahead-field"));
         $container.find("li:not(.query-holder)").remove();
         var lastQuery = "";
-
-        $query.on("change", function () {
-            if ($container.attr("data-typeahead-field") && $query.val() === "") {
-                $container.removeClass('focused');
-                $container.find("li:not(.query-holder)").remove();
-                return;
-            }
+        var runQueryTimeout = null;
+        function runQuery() {
             lastQuery = $query.val();
             var thisQuery = $query.val();
             $.getJSON(
@@ -119,6 +114,17 @@ $(function () {
                     $container.toggleClass('focused', $query.is(":focus") && $container.children().length > 0);
                 }
             );
+        }
+        $query.on("change", function () {
+            if ($container.attr("data-typeahead-field") && $query.val() === "") {
+                $container.removeClass('focused');
+                $container.find("li:not(.query-holder)").remove();
+                return;
+            }
+            if (runQueryTimeout != null) {
+                window.clearTimeout(runQueryTimeout)
+            }
+            runQueryTimeout = window.setTimeout(runQuery, 250)
         });
         $query.on("keydown", function (event) {
             var $selected = $container.find(".active");
diff --git a/src/pretix/static/pretixpresale/js/ui/main.js b/src/pretix/static/pretixpresale/js/ui/main.js
index 34a85db5bf..b1fe04f218 100644
--- a/src/pretix/static/pretixpresale/js/ui/main.js
+++ b/src/pretix/static/pretixpresale/js/ui/main.js
@@ -191,6 +191,7 @@ function setup_basics(el) {
         else $(":input", this).get(0).focus();
     });
     el.find(".alert-danger").first().each(function() {
+        var container = this;
         var content = $("<ul></ul>").click(function(e) {
             var input = $(e.target.hash).get(0);
             if (input) input.focus();
@@ -199,13 +200,14 @@ function setup_basics(el) {
         });
         $(".has-error").each(function() {
             var target = target = $(":input", this);
-            if (!target || !target.attr("aria-describedby")) return;
-            var desc = $("#" + target.attr("aria-describedby").split(' ', 1)[0]);
+            var desc = target && target.attr("aria-describedby") ? document.getElementById(target.attr("aria-describedby").split(' ', 1)[0]) : null;
+            if (!target || !desc || desc == container) return;
+
             // multi-input fields have a role=group with aria-labelledby
             var label = this.hasAttribute("aria-labelledby") ? $("#" + this.getAttribute("aria-labelledby")) : $("[for="+target.attr("id")+"]");
 
             var $li = $("<li>");
-            $li.text(": " + desc.text())
+            $li.text(": " + desc.textContent)
             $li.prepend($("<a>").attr("href", "#" + target.attr("id")).text(label.get(0).childNodes[0].nodeValue))
             content.append($li);
         });
diff --git a/src/setup.py b/src/setup.py
index 8dabe00617..8f95b91dc0 100644
--- a/src/setup.py
+++ b/src/setup.py
@@ -199,7 +199,7 @@ setup(
         'markdown==3.3.4',  # 3.3.5 requires importlib-metadata>=4.4, but django-bootstrap3 requires importlib-metadata<3.
         # We can upgrade markdown again once django-bootstrap3 upgrades or once we drop Python 3.6 and 3.7
         'mt-940==4.23.*',
-        'oauthlib==3.1.*',
+        'oauthlib==3.2.*',
         'openpyxl==3.0.*',
         'packaging',
         'paypalrestsdk==1.13.*',
@@ -211,7 +211,7 @@ setup(
         'psycopg2-binary',
         'pycountry',
         'pycparser==2.21',
-        'PyPDF2==1.27.9',
+        'PyPDF2==2.9.*',
         'python-bidi==0.4.*',  # Support for Arabic in reportlab
         'python-dateutil==2.8.*',
         'python-u2flib-server==4.*',
@@ -248,11 +248,11 @@ setup(
             'pytest-cache',
             'pytest-cov',
             'pytest-django==4.*',
-            'pytest-mock>=2.0,<3.7',
-            'pytest-rerunfailures>=9,<11',
+            'pytest-mock==3.8.*',
+            'pytest-rerunfailures==10.2',
             'pytest-sugar',
-            'pytest-xdist==1.31.*',
-            'pytest==6.*',
+            'pytest-xdist==2.5.*',
+            'pytest==7.*',
             'responses',
         ],
         'memcached': ['pylibmc'],
diff --git a/src/tests/api/test_customers.py b/src/tests/api/test_customers.py
index 233b6eebff..54a18cac55 100644
--- a/src/tests/api/test_customers.py
+++ b/src/tests/api/test_customers.py
@@ -82,6 +82,7 @@ def test_customer_create(token_client, organizer):
         data={
             'identifier': 'IGNORED',
             'email': 'bar@example.com',
+            'password': 'foobar',
             'name_parts': {
                 "_scheme": "given_family",
                 'given_name': 'John',
@@ -99,6 +100,7 @@ def test_customer_create(token_client, organizer):
         assert customer.is_active
         assert customer.name == 'John Doe'
         assert customer.is_verified
+        assert customer.check_password('foobar')
     assert len(djmail.outbox) == 0
 
 
diff --git a/src/tests/base/test_orderimport.py b/src/tests/base/test_orderimport.py
index cd6c82455d..e2cbf9bf4e 100644
--- a/src/tests/base/test_orderimport.py
+++ b/src/tests/base/test_orderimport.py
@@ -93,7 +93,7 @@ def inputfile_factory():
             'D': 'Test',
             'E': 'Baz',
             'F': '0.00',
-            'G': 'AU',
+            'G': 'XK',
             'H': '',
             'I': 'Foo,Bar',
             'J': '2021-06-28 11:00:00',
diff --git a/src/tests/base/test_vat_id_validation.py b/src/tests/base/test_vat_id_validation.py
new file mode 100644
index 0000000000..e51935c1d2
--- /dev/null
+++ b/src/tests/base/test_vat_id_validation.py
@@ -0,0 +1,198 @@
+#
+# This file is part of pretix (Community Edition).
+#
+# Copyright (C) 2014-2020 Raphael Michel and contributors
+# Copyright (C) 2020-2021 rami.io GmbH and contributors
+#
+# This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General
+# Public License as published by the Free Software Foundation in version 3 of the License.
+#
+# ADDITIONAL TERMS APPLY: Pursuant to Section 7 of the GNU Affero General Public License, additional terms are
+# applicable granting you additional permissions and placing additional restrictions on your usage of this software.
+# Please refer to the pretix LICENSE file to obtain the full terms applicable to this work. If you did not receive
+# this file, see <https://pretix.eu/about/en/license>.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
+# details.
+#
+# You should have received a copy of the GNU Affero General Public License along with this program.  If not, see
+# <https://www.gnu.org/licenses/>.
+#
+import pytest
+import responses
+from requests import Timeout
+
+from pretix.base.services.tax import (
+    VATIDFinalError, VATIDTemporaryError, validate_vat_id,
+)
+
+
+def test_unknown_country():
+    with pytest.raises(VATIDTemporaryError):
+        validate_vat_id('TR12345', 'TR')
+
+
+@responses.activate
+def test_eu_invalid_format():
+    with pytest.raises(VATIDFinalError):
+        validate_vat_id('AT12345', 'AT')
+
+
+@responses.activate
+def test_eu_no_prefix():
+    with pytest.raises(VATIDFinalError):
+        validate_vat_id('12345', 'AT')
+
+
+@responses.activate
+def test_eu_country_mismatch():
+    with pytest.raises(VATIDFinalError):
+        validate_vat_id('AT12345', 'DE')
+
+
+@responses.activate
+def test_eu_server_down():
+    def _callback(request):
+        raise Timeout
+
+    responses.add_callback(
+        responses.POST,
+        'https://ec.europa.eu/taxation_customs/vies/services/checkVatService',
+        callback=_callback
+    )
+
+    with pytest.raises(VATIDTemporaryError):
+        validate_vat_id('ATU36801500', 'AT')
+
+
+@responses.activate
+def test_eu_server_error():
+    responses.add(
+        responses.POST,
+        'https://ec.europa.eu/taxation_customs/vies/services/checkVatService',
+        body='error',
+        status=500
+    )
+
+    with pytest.raises(VATIDTemporaryError):
+        validate_vat_id('ATU36801500', 'AT')
+
+
+@responses.activate
+def test_eu_id_invalid():
+    responses.add(
+        responses.POST,
+        'https://ec.europa.eu/taxation_customs/vies/services/checkVatService',
+        body="""<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
+            <soap:Body>
+                <checkVatResponse xmlns="urn:ec.europa.eu:taxud:vies:services:checkVat:types">
+                    <countryCode>AT</countryCode>
+                    <vatNumber>U36801500</vatNumber>
+                    <requestDate>2014-12-17+01:00</requestDate>
+                    <valid>false</valid>
+                    <name>STADT WIEN</name>
+                    <address>UNKNOWN</address>
+               </checkVatResponse>
+            </soap:Body>
+        </soap:Envelope>""",
+        status=200
+    )
+
+    with pytest.raises(VATIDFinalError):
+        validate_vat_id('ATU36801500', 'AT')
+
+
+@responses.activate
+def test_eu_id_valid():
+    responses.add(
+        responses.POST,
+        'https://ec.europa.eu/taxation_customs/vies/services/checkVatService',
+        body="""<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
+            <soap:Body>
+                <checkVatResponse xmlns="urn:ec.europa.eu:taxud:vies:services:checkVat:types">
+                    <countryCode>AT</countryCode>
+                    <vatNumber>U36801500</vatNumber>
+                    <requestDate>2014-12-17+01:00</requestDate>
+                    <valid>true</valid>
+                    <name>STADT WIEN</name>
+                    <address>UNKNOWN</address>
+               </checkVatResponse>
+            </soap:Body>
+        </soap:Envelope>""",
+        status=200
+    )
+
+    assert validate_vat_id('ATU36801500', 'AT') == 'ATU36801500'
+
+
+@responses.activate
+def test_NO_invalid_format():
+    with pytest.raises(VATIDFinalError):
+        validate_vat_id('NO12345', 'NO')
+
+
+@responses.activate
+def test_NO_server_down():
+    def _callback(request):
+        raise Timeout
+
+    responses.add_callback(
+        responses.GET,
+        'https://data.brreg.no/enhetsregisteret/api/enheter/974760673',
+        callback=_callback
+    )
+
+    with pytest.raises(VATIDTemporaryError):
+        validate_vat_id('NO974760673 MVA', 'NO')
+
+
+@responses.activate
+def test_NO_server_error():
+    responses.add(
+        responses.GET,
+        'https://data.brreg.no/enhetsregisteret/api/enheter/974760673',
+        body='error',
+        status=500
+    )
+
+    with pytest.raises(VATIDTemporaryError):
+        validate_vat_id('NO974760673 MVA', 'NO')
+
+
+@responses.activate
+def test_NO_id_invalid():
+    responses.add(
+        responses.GET,
+        'https://data.brreg.no/enhetsregisteret/api/enheter/974760673',
+        body="",
+        status=404
+    )
+
+    with pytest.raises(VATIDFinalError):
+        validate_vat_id('NO974760673 MVA', 'NO')
+
+
+@responses.activate
+def test_NO_id_valid():
+    responses.add(
+        responses.GET,
+        'https://data.brreg.no/enhetsregisteret/api/enheter/974760673',
+        body='{"organisasjonsnummer":"974760673","navn":"REGISTERENHETEN I BRØNNØYSUND","organisasjonsform":{"kode":'
+             '"ORGL","beskrivelse":"Organisasjonsledd","_links":{"self":{"href":"https://data.brreg.no/enhetsregisteret/api/'
+             'organisasjonsformer/ORGL"}}},"hjemmeside":"www.brreg.no","postadresse":{"land":"Norge","landkode":"NO","postn'
+             'ummer":"8910","poststed":"BRØNNØYSUND","adresse":["Postboks 900"],"kommune":"BRØNNØY","kommunenummer":"1813"}'
+             ',"registreringsdatoEnhetsregisteret":"1995-08-09","registrertIMvaregisteret":false,"naeringskode1":{"beskrivels'
+             'e":"Generell offentlig administrasjon","kode":"84.110"},"antallAnsatte":455,"overordnetEnhet":"912660680","for'
+             'retningsadresse":{"land":"Norge","landkode":"NO","postnummer":"8900","poststed":"BRØNNØYSUND","adresse":["Havn'
+             'egata 48"],"kommune":"BRØNNØY","kommunenummer":"1813"},"institusjonellSektorkode":{"kode":"6100","beskrivelse'
+             '":"Statsforvaltningen"},"registrertIForetaksregisteret":false,"registrertIStiftelsesregisteret":false,"registr'
+             'ertIFrivillighetsregisteret":false,"konkurs":false,"underAvvikling":false,"underTvangsavviklingEllerTvangsopp'
+             'losning":false,"maalform":"Bokmål","_links":{"self":{"href":"https://data.brreg.no/enhetsregisteret/api/enheter'
+             '/974760673"},"overordnetEnhet":{"href":"https://data.brreg.no/enhetsregisteret/api/enheter/912660680"}}}',
+        status=200
+    )
+
+    assert validate_vat_id('NO974760673 MVA', 'NO') == 'NO974760673MVA'
+
+# No tests for CH currently since it's harder to mock Zeep
diff --git a/src/tests/control/test_orders.py b/src/tests/control/test_orders.py
index 2a88e481b6..92292dc124 100644
--- a/src/tests/control/test_orders.py
+++ b/src/tests/control/test_orders.py
@@ -54,6 +54,7 @@ from pretix.base.payment import PaymentException
 from pretix.base.services.invoices import (
     generate_cancellation, generate_invoice,
 )
+from pretix.base.services.tax import VATIDFinalError, VATIDTemporaryError
 
 
 @pytest.fixture
@@ -1563,8 +1564,8 @@ def test_check_vatid(client, env):
     client.login(email='dummy@dummy.dummy', password='dummy')
     with scopes_disabled():
         ia = InvoiceAddress.objects.create(order=env[2], is_business=True, vat_id='ATU1234567', country=Country('AT'))
-    with mock.patch('vat_moss.id.validate') as mock_validate:
-        mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+    with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+        mock_validate.return_value = 'AT123456'
         response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
         assert 'alert-success' in response.content.decode()
         ia.refresh_from_db()
@@ -1576,8 +1577,8 @@ def test_check_vatid_no_entered(client, env):
     client.login(email='dummy@dummy.dummy', password='dummy')
     with scopes_disabled():
         ia = InvoiceAddress.objects.create(order=env[2], is_business=True, country=Country('AT'))
-    with mock.patch('vat_moss.id.validate') as mock_validate:
-        mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+    with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+        mock_validate.return_value = 'AT123456'
         response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
         assert 'alert-danger' in response.content.decode()
         ia.refresh_from_db()
@@ -1589,12 +1590,10 @@ def test_check_vatid_invalid_country(client, env):
     client.login(email='dummy@dummy.dummy', password='dummy')
     with scopes_disabled():
         ia = InvoiceAddress.objects.create(order=env[2], is_business=True, vat_id='ATU1234567', country=Country('FR'))
-    with mock.patch('vat_moss.id.validate') as mock_validate:
-        mock_validate.return_value = ('AT', 'AT123456', 'Foo')
-        response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
-        assert 'alert-danger' in response.content.decode()
-        ia.refresh_from_db()
-        assert not ia.vat_id_validated
+    response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
+    assert 'alert-danger' in response.content.decode()
+    ia.refresh_from_db()
+    assert not ia.vat_id_validated
 
 
 @pytest.mark.django_db
@@ -1602,8 +1601,8 @@ def test_check_vatid_noneu_country(client, env):
     client.login(email='dummy@dummy.dummy', password='dummy')
     with scopes_disabled():
         ia = InvoiceAddress.objects.create(order=env[2], is_business=True, vat_id='CHU1234567', country=Country('CH'))
-    with mock.patch('vat_moss.id.validate') as mock_validate:
-        mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+    with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+        mock_validate.return_value = 'AT123456'
         response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
         assert 'alert-danger' in response.content.decode()
         ia.refresh_from_db()
@@ -1615,8 +1614,8 @@ def test_check_vatid_no_country(client, env):
     client.login(email='dummy@dummy.dummy', password='dummy')
     with scopes_disabled():
         ia = InvoiceAddress.objects.create(order=env[2], is_business=True, vat_id='ATU1234567')
-    with mock.patch('vat_moss.id.validate') as mock_validate:
-        mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+    with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+        mock_validate.return_value = 'AT123456'
         response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
         assert 'alert-danger' in response.content.decode()
         ia.refresh_from_db()
@@ -1626,8 +1625,8 @@ def test_check_vatid_no_country(client, env):
 @pytest.mark.django_db
 def test_check_vatid_no_invoiceaddress(client, env):
     client.login(email='dummy@dummy.dummy', password='dummy')
-    with mock.patch('vat_moss.id.validate') as mock_validate:
-        mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+    with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+        mock_validate.return_value = 'AT123456'
         response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
         assert 'alert-danger' in response.content.decode()
 
@@ -1637,10 +1636,9 @@ def test_check_vatid_invalid(client, env):
     client.login(email='dummy@dummy.dummy', password='dummy')
     with scopes_disabled():
         ia = InvoiceAddress.objects.create(order=env[2], is_business=True, vat_id='ATU1234567', country=Country('AT'))
-    with mock.patch('vat_moss.id.validate') as mock_validate:
+    with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
         def raiser(*args, **kwargs):
-            import vat_moss.errors
-            raise vat_moss.errors.InvalidError('Fail')
+            raise VATIDFinalError('Fail')
 
         mock_validate.side_effect = raiser
         response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
@@ -1654,10 +1652,9 @@ def test_check_vatid_unavailable(client, env):
     client.login(email='dummy@dummy.dummy', password='dummy')
     with scopes_disabled():
         ia = InvoiceAddress.objects.create(order=env[2], is_business=True, vat_id='ATU1234567', country=Country('AT'))
-    with mock.patch('vat_moss.id.validate') as mock_validate:
+    with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
         def raiser(*args, **kwargs):
-            import vat_moss.errors
-            raise vat_moss.errors.WebServiceUnavailableError('Fail')
+            raise VATIDTemporaryError('Fail')
 
         mock_validate.side_effect = raiser
         response = client.post('/control/event/dummy/dummy/orders/FOO/checkvatid', {}, follow=True)
diff --git a/src/tests/plugins/badges/test_pdf.py b/src/tests/plugins/badges/test_pdf.py
index 6a1f354b7f..82cd64a3ca 100644
--- a/src/tests/plugins/badges/test_pdf.py
+++ b/src/tests/plugins/badges/test_pdf.py
@@ -39,7 +39,7 @@ from io import BytesIO
 import pytest
 from django.utils.timezone import now
 from django_scopes import scope
-from PyPDF2 import PdfFileReader
+from PyPDF2 import PdfReader
 
 from pretix.base.models import (
     Event, Item, ItemVariation, Order, OrderPosition, Organizer,
@@ -100,8 +100,8 @@ def test_generate_pdf(env):
         'include_pending': True
     })
     assert ftype == 'application/pdf'
-    pdf = PdfFileReader(BytesIO(buf))
-    assert pdf.numPages == 2
+    pdf = PdfReader(BytesIO(buf))
+    assert len(pdf.pages) == 2
 
 
 @pytest.mark.django_db
@@ -115,5 +115,5 @@ def test_generate_pdf_multi(env):
         'include_pending': True
     })
     assert ftype == 'application/pdf'
-    pdf = PdfFileReader(BytesIO(buf))
-    assert pdf.numPages == 1
+    pdf = PdfReader(BytesIO(buf))
+    assert len(pdf.pages) == 1
diff --git a/src/tests/plugins/ticketoutputpdf/test_ticketoutputpdf.py b/src/tests/plugins/ticketoutputpdf/test_ticketoutputpdf.py
index c20186b237..c98bdddb76 100644
--- a/src/tests/plugins/ticketoutputpdf/test_ticketoutputpdf.py
+++ b/src/tests/plugins/ticketoutputpdf/test_ticketoutputpdf.py
@@ -26,7 +26,7 @@ from io import BytesIO
 import pytest
 from django.utils.timezone import now
 from django_scopes import scope
-from PyPDF2 import PdfFileReader
+from PyPDF2 import PdfReader
 
 from pretix.base.models import (
     Event, Item, ItemVariation, Order, OrderPosition, Organizer,
@@ -70,5 +70,5 @@ def test_generate_pdf(env0):
         o = PdfTicketOutput(event)
         fname, ftype, buf = o.generate(order.positions.first())
         assert ftype == 'application/pdf'
-        pdf = PdfFileReader(BytesIO(buf))
-        assert pdf.numPages == 1
+        pdf = PdfReader(BytesIO(buf))
+        assert len(pdf.pages) == 1
diff --git a/src/tests/presale/test_checkout.py b/src/tests/presale/test_checkout.py
index 2e53ba8284..326b1f1db5 100644
--- a/src/tests/presale/test_checkout.py
+++ b/src/tests/presale/test_checkout.py
@@ -47,6 +47,7 @@ from pretix.base.models.items import (
     ItemAddOn, ItemBundle, ItemVariation, SubEventItem, SubEventItemVariation,
 )
 from pretix.base.services.orders import OrderError, _perform_order
+from pretix.base.services.tax import VATIDFinalError, VATIDTemporaryError
 from pretix.testutils.scope import classscope
 from pretix.testutils.sessions import get_cart_session_key
 
@@ -139,8 +140,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
                 'company': 'Foo',
@@ -163,8 +164,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
     def test_reverse_charge_enable_then_disable(self):
         self.test_reverse_charge()
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'individual',
                 'name': 'Bar',
@@ -195,10 +196,9 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
             def raiser(*args, **kwargs):
-                import vat_moss.errors
-                raise vat_moss.errors.InvalidError()
+                raise VATIDFinalError('final')
 
             mock_validate.side_effect = raiser
             resp = self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
@@ -229,7 +229,7 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
             mock_validate.return_value = ('AU', 'AU123456', 'Foo')
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
@@ -263,8 +263,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
                 'company': 'Foo',
@@ -296,20 +296,18 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
-            resp = self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
-                'is_business': 'business',
-                'company': 'Foo',
-                'name': 'Bar',
-                'street': 'Baz',
-                'zipcode': '12345',
-                'city': 'Here',
-                'country': 'FR',
-                'vat_id': 'AT123456',
-                'email': 'admin@localhost'
-            }, follow=True)
-            assert 'alert-danger' in resp.content.decode()
+        resp = self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
+            'is_business': 'business',
+            'company': 'Foo',
+            'name': 'Bar',
+            'street': 'Baz',
+            'zipcode': '12345',
+            'city': 'Here',
+            'country': 'FR',
+            'vat_id': 'AT123456',
+            'email': 'admin@localhost'
+        }, follow=True)
+        assert 'alert-danger' in resp.content.decode()
 
         cr1.refresh_from_db()
         assert cr1.price == Decimal('23.00')
@@ -326,10 +324,9 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
             def raiser(*args, **kwargs):
-                import vat_moss.errors
-                raise vat_moss.errors.WebServiceUnavailableError('Fail')
+                raise VATIDTemporaryError('temp')
 
             mock_validate.side_effect = raiser
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
@@ -364,8 +361,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
                 'company': 'Foo',
@@ -401,8 +398,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
                 'company': 'Foo',
@@ -418,7 +415,7 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
         cr1.refresh_from_db()
         assert cr1.price == Decimal('19.33')
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
             mock_validate.return_value = ('DE', 'DE123456', 'Foo')
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
@@ -465,8 +462,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
         cr1.refresh_from_db()
         assert cr1.price == Decimal('23.00')
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             r = self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
                 'company': 'Foo',
@@ -525,8 +522,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 price=23, expires=now() + timedelta(minutes=10)
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'individual',
                 'name': 'Bar',
@@ -577,8 +574,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
                 voucher=self.event.vouchers.create()
             )
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'individual',
                 'name': 'Bar',
@@ -605,8 +602,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
     def test_country_taxing_switch(self):
         self._test_country_taxing()
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'individual',
                 'name': 'Bar',
@@ -657,8 +654,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
             assert cr1.price == Decimal('28.56')
             assert cr1.tax_rate == Decimal('19.00')
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
                 'company': 'Foo',
@@ -721,8 +718,8 @@ class CheckoutTestCase(BaseCheckoutTestCase, TestCase):
             assert cr1.price == Decimal('47.60')
             assert cr1.tax_rate == Decimal('19.00')
 
-        with mock.patch('vat_moss.id.validate') as mock_validate:
-            mock_validate.return_value = ('AT', 'AT123456', 'Foo')
+        with mock.patch('pretix.base.services.tax._validate_vat_id_EU') as mock_validate:
+            mock_validate.return_value = 'AT123456'
             self.client.post('/%s/%s/checkout/questions/' % (self.orga.slug, self.event.slug), {
                 'is_business': 'business',
                 'company': 'Foo',