I want to synchronize calendar and contacts with posteo account. Synchronization of contacts is working.
Android calendar has been synchronized with posteo, but not all appointments have been synchronized to server. If I trigger a new synchronization via “Settings > Account DavDroid > Synchronize Now” the synchronization will somehow run, but actually modifications will not be synchronized. Timestamp of last synchronization does not change though no “synchronization error” is shown. Neither server modifications nor local modifications are synchronized anymore.
No recovery. I tried to solve the problem by using a new account, but that did not help out.
DavDroid 0.6.2 from Google Play Store
Motorola Moto G
Server: posteo.de with activated encryption for contacts and calendar