Sorry for being a little slow in replying.
I have now updated to 0.3.5-alpha and sync works much better. After several sync trials, I hope that now all events have been synced from the server to my phone. Also adding events on the phone and syncing to the server seems to work, butDAVdroid regularly crashes while syncing the calendar app tends to hang while syncing, for a full calender it becomes almost unusable
I should mention that also with
I have trouble syncing my events. I feel that your app is atm superior in syncing, but those hangs/crashes are really a pain.
I hope thats helpful for the development, many thanks for this great app!