Sorry for the noise. It was a problem with one of the accounts.
Now it works as expected. Only one account needed and both cardav and caldav can connect. Tasks also work.
Editing of calendar dates of DavCal derived entries at frontend/thunderbird is not possible (solved)
I have send already an eMail, but now I received the confirmation mail.
Equipment: Android 9.1 based Huawei P20, Calendar is acalendar+, Davx5, Thunderbird 60.x, Synology NAS DSM 6.2
- Make Calendar entry at smartphone with alarm
- Edit entry at synology frontend or thunderbird to remove alarm not possible (no error message, you just see it if you oben the entry again.
- Vice versa it is no problem, you can edit entries which derived first from frontend or thunderbird.
Either Davx5 introduce a writeprotection or acalendar+ is doing so.
Can you please provide DAVx⁵ debug info (DAVx⁵ / Settings / Debug info)?
Do you use events with attendees/organizer?
It seems to be solved.
I was using the TBsync Addon in Thunderbird https://addons.thunderbird.net/de/thunderbird/addon/tbsync/?src=ss
Adding https://addons.thunderbird.net/de/thunderbird/addon/dav-4-tbsync/?src=userprofile to Thunderbird too solved the problems. Right now. So right now it was no problem of Davx5.
Thanks for help.
@Fraggle Thanks for the update!