diff --git a/src/pretix/locale/cs/LC_MESSAGES/djangojs.po b/src/pretix/locale/cs/LC_MESSAGES/djangojs.po
index f2297afa18..161f82c1de 100644
--- a/src/pretix/locale/cs/LC_MESSAGES/djangojs.po
+++ b/src/pretix/locale/cs/LC_MESSAGES/djangojs.po
@@ -8,8 +8,8 @@ msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2021-05-13 08:11+0000\n"
-"PO-Revision-Date: 2020-12-14 10:00+0000\n"
-"Last-Translator: Ondřej Sokol <osokol@treesoft.cz>\n"
+"PO-Revision-Date: 2021-05-20 07:27+0000\n"
+"Last-Translator: Smejkal Vojtěch <me@vsmejkal.eu>\n"
 "Language-Team: Czech <https://translate.pretix.eu/projects/pretix/pretix-js/"
 "cs/>\n"
 "Language: cs\n"
@@ -17,188 +17,182 @@ msgstr ""
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
 "Plural-Forms: nplurals=3; plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2;\n"
-"X-Generator: Weblate 3.10.3\n"
+"X-Generator: Weblate 4.6\n"
 
 #: pretix/plugins/banktransfer/static/pretixplugins/banktransfer/ui.js:56
 #: pretix/plugins/banktransfer/static/pretixplugins/banktransfer/ui.js:62
 #: pretix/plugins/banktransfer/static/pretixplugins/banktransfer/ui.js:68
 msgid "Marked as paid"
-msgstr ""
+msgstr "Označeno jako zaplacené"
 
 #: pretix/plugins/banktransfer/static/pretixplugins/banktransfer/ui.js:76
 msgid "Comment:"
-msgstr ""
+msgstr "Komentář:"
 
 #: pretix/plugins/statistics/static/pretixplugins/statistics/statistics.js:15
 #: pretix/plugins/statistics/static/pretixplugins/statistics/statistics.js:39
 msgid "Placed orders"
-msgstr ""
+msgstr "Vytvořené objednávky"
 
 #: pretix/plugins/statistics/static/pretixplugins/statistics/statistics.js:15
 #: pretix/plugins/statistics/static/pretixplugins/statistics/statistics.js:39
 msgid "Paid orders"
-msgstr ""
+msgstr "Zaplacené objednávky"
 
 #: pretix/plugins/statistics/static/pretixplugins/statistics/statistics.js:27
 msgid "Total revenue"
-msgstr ""
+msgstr "Celkové příjmy"
 
 #: pretix/plugins/stripe/static/pretixplugins/stripe/pretix-stripe.js:12
 msgid "Contacting Stripe …"
-msgstr ""
+msgstr "Kontaktuji Stripe …"
 
 #: pretix/plugins/stripe/static/pretixplugins/stripe/pretix-stripe.js:60
 msgid "Total"
-msgstr ""
+msgstr "Celkem"
 
 #: pretix/plugins/stripe/static/pretixplugins/stripe/pretix-stripe.js:152
 #: pretix/plugins/stripe/static/pretixplugins/stripe/pretix-stripe.js:183
 msgid "Confirming your payment …"
-msgstr ""
+msgstr "Potvrzuji vaši platbu …"
 
 #: pretix/plugins/stripe/static/pretixplugins/stripe/pretix-stripe.js:159
 msgid "Contacting your bank …"
-msgstr ""
+msgstr "Kontaktuji vaši banku …"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:30
 msgid "Select a check-in list"
-msgstr ""
+msgstr "Zvolte check-in list"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:31
 msgid "No active check-in lists found."
-msgstr ""
+msgstr "Žádné aktivní check-in listy."
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:32
 msgid "Switch check-in list"
-msgstr ""
+msgstr "Změnit check-in list"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:33
 msgid "Search results"
-msgstr ""
+msgstr "Vyhledat výsledky"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:34
 msgid "No tickets found"
-msgstr ""
+msgstr "Nenalezeny žádné lístky"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:35
 msgid "Result"
-msgstr ""
+msgstr "Výsledek"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:36
 msgid "This ticket requires special attention"
-msgstr ""
+msgstr "Tato vstupenka vyžaduje speciální pozornost"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:37
 msgid "Switch direction"
-msgstr ""
+msgstr "Změnit směr"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:38
 msgid "Entry"
-msgstr ""
+msgstr "Vstup"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:39
 msgid "Exit"
-msgstr ""
+msgstr "Výstup"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:40
 msgid "Scan a ticket or search and press return…"
-msgstr ""
+msgstr "Naskenujte vstupenku, nebo ji vyhledejte a zmáčkněte zpět…"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:41
 msgid "Load more"
-msgstr ""
+msgstr "Načíst více"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:42
 msgid "Valid"
-msgstr ""
+msgstr "Potrvzeno"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:43
 msgid "Unpaid"
-msgstr ""
+msgstr "Nezaplaceno"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:44
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:45
 msgid "Canceled"
-msgstr ""
+msgstr "Zrušeno"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:46
-#, fuzzy
-#| msgctxt "widget"
-#| msgid "Redeem"
 msgid "Redeemed"
-msgstr "Uplatnit"
+msgstr "Uplatněno"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:47
 msgid "Cancel"
-msgstr ""
+msgstr "Zrušit"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:48
-#, fuzzy
-#| msgctxt "widget"
-#| msgid "Continue"
 msgid "Continue"
 msgstr "Pokračovat"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:49
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:58
 msgid "Ticket not paid"
-msgstr ""
+msgstr "Vstupenka nezaplacena"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:50
 msgid "This ticket is not yet paid. Do you want to continue anyways?"
-msgstr ""
+msgstr "Vstupenka nebyla zaplacena. Chcete i přesto pokračovat?"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:51
 msgid "Additional information required"
-msgstr ""
+msgstr "Je potřeba více infromací"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:52
 msgid "Valid ticket"
-msgstr ""
+msgstr "Platná vstupenka"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:53
 msgid "Exit recorded"
-msgstr ""
+msgstr "Opustit nahrávané"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:54
 msgid "Ticket already used"
-msgstr ""
+msgstr "Vstupenka již byla použita"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:55
 msgid "Information required"
-msgstr ""
+msgstr "Informace vyžadována"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:56
 msgid "Invalid ticket"
-msgstr ""
+msgstr "Neplatná vstupenka"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:57
 msgid "Invalid product"
-msgstr ""
+msgstr "Neplatný produkt"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:59
 msgid "Entry not allowed"
-msgstr ""
+msgstr "Vstup není povolen"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:60
 msgid "Ticket code revoked/changed"
-msgstr ""
+msgstr "Kód vstupenky změněn"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:61
 msgid "Order canceled"
-msgstr ""
+msgstr "Objednávka zrušena"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:62
 msgid "Checked-in Tickets"
-msgstr ""
+msgstr "Odbavené vstupenky"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:63
 msgid "Valid Tickets"
-msgstr ""
+msgstr "Platné vstupenky"
 
 #: pretix/plugins/webcheckin/static/pretixplugins/webcheckin/main.js:64
 msgid "Currently inside"
-msgstr ""
+msgstr "Právě uvnitř"
 
 #: pretix/static/pretixbase/js/asynctask.js:43
 #: pretix/static/pretixbase/js/asynctask.js:117
@@ -206,11 +200,13 @@ msgid ""
 "Your request is currently being processed. Depending on the size of your "
 "event, this might take up to a few minutes."
 msgstr ""
+"Váš požadavek je právě zpracováván. V závislosti na velikosti vaší udalosti, "
+"to může trvat několik minut."
 
 #: pretix/static/pretixbase/js/asynctask.js:48
 #: pretix/static/pretixbase/js/asynctask.js:122
 msgid "Your request has been queued on the server and will soon be processed."
-msgstr ""
+msgstr "Váš požadavek byl vložem do fronty serveru a brzy bude zpracován."
 
 #: pretix/static/pretixbase/js/asynctask.js:54
 #: pretix/static/pretixbase/js/asynctask.js:128
@@ -219,34 +215,41 @@ msgid ""
 "If this takes longer than two minutes, please contact us or go back in your "
 "browser and try again."
 msgstr ""
+"Váš požadavek byl přijat na server, ale stále čekáme na jeho zpracování. "
+"Pokud to trvá více jak dvě minuty, prosím kontaktuje nás nebo se vraťte do "
+"vašeho prohlížeče a zkuste to znovu."
 
 #: pretix/static/pretixbase/js/asynctask.js:87
 #: pretix/static/pretixbase/js/asynctask.js:169
 #: pretix/static/pretixbase/js/asynctask.js:174
 #: pretix/static/pretixcontrol/js/ui/mail.js:24
 msgid "An error of type {code} occurred."
-msgstr ""
+msgstr "Vyskytla se chyba {code}."
 
 #: pretix/static/pretixbase/js/asynctask.js:90
 msgid ""
 "We currently cannot reach the server, but we keep trying. Last error code: "
 "{code}"
 msgstr ""
+"Momentálně nemůžeme kontaktovat server, ale stále se o to pokoušíme. "
+"Poslední chybový kód: {code}"
 
 #: pretix/static/pretixbase/js/asynctask.js:142
 #: pretix/static/pretixcontrol/js/ui/mail.js:21
 msgid "The request took too long. Please try again."
-msgstr ""
+msgstr "Zpracování požadavku trvá příliš dlouho. Prosím zkuste to znovu."
 
 #: pretix/static/pretixbase/js/asynctask.js:177
 #: pretix/static/pretixcontrol/js/ui/mail.js:26
 msgid ""
 "We currently cannot reach the server. Please try again. Error code: {code}"
 msgstr ""
+"Momentálně nemůžeme kontaktovat server. Prosím zkuste to znovu. Chybový kód: "
+"{code}"
 
 #: pretix/static/pretixbase/js/asynctask.js:199
 msgid "We are processing your request …"
-msgstr ""
+msgstr "Zpracováváme váš požadavek …"
 
 #: pretix/static/pretixbase/js/asynctask.js:207
 msgid ""
@@ -254,19 +257,22 @@ msgid ""
 "than one minute, please check your internet connection and then reload this "
 "page and try again."
 msgstr ""
+"Právě odesíláme váš požadavek na server. Pokud to trvá déle než minutu, "
+"prosím zkontrolujte své internetové připojení a znovu načtěte stránku a "
+"zkuste to znovu."
 
 #: pretix/static/pretixbase/js/asynctask.js:245
 #: pretix/static/pretixcontrol/js/ui/main.js:34
 msgid "Close message"
-msgstr ""
+msgstr "Zavřít zprávu"
 
 #: pretix/static/pretixcontrol/js/clipboard.js:23
 msgid "Copied!"
-msgstr ""
+msgstr "Zkopírováno!"
 
 #: pretix/static/pretixcontrol/js/clipboard.js:29
 msgid "Press Ctrl-C to copy!"
-msgstr ""
+msgstr "Stiskněte Ctrl-C pro zkopírování!"
 
 #: pretix/static/pretixcontrol/js/ui/checkinrules.js:10
 #: pretix/static/pretixcontrol/js/ui/checkinrules.js:16