I’ve made these settings (already some time before posting): exclude DAVx from the system’s automatic (power) management allow Auto-start, secondary start from other apps, continue executing the app in background I do not know, why it says “Power saving disabled: no” because there is no other settings that can be done. For testing purposes, I set the sync intervall for the calendar to 120 min and for tasks to 15 min. Result: ==> calendar is sync’ed, tasks are not

@rfc2822 turns out there is a setting in the privacy guard to restrict app from modifying the calendar. And the calendar storage app had no permission to do so I probably took the permission, or maybe it was never set. Not sure

@6042114fa0 I have found emails where this was reported … but very rarely.

I have the same problem with smartphone Leagoo Elite 5. It’s work with caldav sync adapter but not with davdroid.

Hi all, first impression after last update to 1.5.01 is, that it is fixed now. I will continue testing next days an let you know, if i will face new problems… Thanks a lot for your support!