On my Android 7 phone and using the latest DD 2.0 (gplay) release, I sometimes experience the following issue:
Hitting “Sync” in the calendar app responds quickly with “Calendars synced”, although I know that it did not correctly sync. Comparing with the calendar on my PC I know that the items have not actually been added/updated/removed.
Going to the DD app and syncing from there seems to fix it.
Currently not sure how to give more details. Does this sound like some known issue?
Android 7 (gplay) no longer syncs unless refresh in app
This is not a known problem. Syncing from various calendar apps works here.
Maybe it would help to know which calender app you’re using.