Thanks for the update and information!
CalDAV + WEB.DE not working at the moment
Since yesterday the synchronsiation of my calendar and tasks with DavDroid does not work any more. The same is with the smartphone of my wife.
We both get the same errors (for details see DAVdroid error log).
I assume that it is a problem of the WEB.DE CalDAv server, but I am unsure and the synchronisation in Thunderbird is still functional.
I already tried the proposal of the 1st entry in the referenced thread but with this I get an error message telling thast no calendar is found at all.
Could someone have a look at the log and check if this is an issue of the WEB.DE server?
Thanks and best regards
Thanks a lot, that really helped.