Synchronisationsprobleme / Auto-Start Berechtigung
In most cases when anything does not work correctly on a Xiaomi device, the AUTO-START permission (non-standard extension by Xiaomi) is not set for aCalendar and thus blocks various actions like notifications or tasks sync.
The auto-start permission can be set in Android/Xiaomi settings under Security - Permissions.
Hintergrundfarbe / Dunkelmodus erzwingen
Bitte schalten Sie Xiaomis Force Dark Mode für aCalendar aus und verwenden Sie stattdessen aCalendars eigenen Dark Mode (Einstellungen / Design).
Widget reagiert nicht
For widgets not responding with 3rd party launchers please activate the following setting:
Android Settings - Apps - Manage apps - aCalendar - Other permissions - Display pop-up windows while running in the background
(see here for more details about this Xiaomi bug https://forum.xda-developers.com/poco-f1/help/nova-launcher-widgets-clickable-t3841380)
App Icon fehlt/verschwindet
This is most likely a bug in Xiaomi's App Vault / Info Assistant, we recommend to simply disable it, see here for instructions: https://android-fix.com/tips-and-tricks/96-what-is-app-vault-on-xiaomi-smartphones.html
Falsches Benachrichtigungs-Icon
If you see the aCalendar app icon instead of the event, tasks, birthday, or date notification icon, please set the notification style in Xiaomi settings to Android (not MIUI).