I don’t know why, but I’m getting for one of my calenders no access via the group.calendar.google.com/events url. Only the private (and public) url to the e/basic.ics works.
But it seems, that Caldav can’t work with these results/url.
Has somebody an idea what’s wrong with my calendar? A sub calender within this calender can be accessed via Caldav and an url like group.calendar.google.com/events