DAVDroid endless requests the server informations after I have given all credentials.
Maybe a server-side timeout or something like that?
If you can fetch logs, we could have a look at what’s actually happening.
With DAVdroid 1.8, it’s now possible to subscribe to/unsubscribe from CalDAV-advertised Webcal feeds (“subscribed calendars”) by integrating ICSdroid.
ICSdroid is a separate app for synchronizing Webcal feeds and can now be used together with DAVdroid (but also as a standalone app).
New in 1.8.1:
Better support for read-only address books: