Please see https://forums.bitfire.at/topic/1674/what-is-the-2-letters-after-the-account-name-for-address-books and the links there (especially the manual)
I am using DAVdroid 0.8.0 on Android 4.4.4 with one CalDAV server.
I have set it up with url, username and password. All private calendars from the server are selectable then, but none of the group calendars - and neither the public calendar from the server.
The private calendars’ url are like these:
The group calendars’ url are like this one:
The public calendar’s url is like this one:
Is this a bug? How can i subscribe to the group and public calendars? They don’t show up in DAVdroid so i cannot select them…
Thanks for your report, but it’s a duplicate of #439.