Seems to be an issue of the Android Settings app, as this only happens when re-installing DAVdroid while the Settings app is active. Is there anyone else having this problem?
Option in FAQ's to set synchronization interval does not exist?
The FAQs have a page describing the process for adjusting sync interval from the default of one day. When I try to do this, the option does not exist - I see only cancel or remove account. Everything else works perfectly but I’d love to get sync working every 30 minutes or so.
Settings have been introduced in DAVdroid 0.7. They are accessed either from the “DAVdroid Accounts” overview - (not inside a certain account, Android requires a seperate section for Account settings!) or via the app start screen.