I had the same problem where I was able to enter my account in davdroid and Davdroid itself successfully found all my calendars, however none of them would sync with the phone’s calendar programs (both the native calendar and e-tar). Seems like a bug / change in android 7 broke calendar syncing. I was unable to get davdroid to work for months, however now that there’s a new DAVx5 client I decided to try it. They fixed it! The link is broken in the fdroid repo’s BTW, however I managed to install davx5 manually and everything’s working. So if anyone else has the same issue, give the new davx5 a shot!
Does not seem to sync 'Organisation'
I sync Android with Owncloud and have found that the 'Organization Field is not syncd in either direction.
Is this possible to correct?
I installed on a second device and it worked with Organisation on that - so I uninstalled from the first device and when I re-installed it worked there too.