I have just tested with DAVdroid/0.9.0.2 and the credentials you have sent, and everything works for me.
I think it’s a problem with your Calendar app. Which one do you use? DAVdroid takes the time (and time zone) information directly from the Calendar Provider, which is filled by your Calendar app.
I have tried with Etar (and just found another bug in it, but it’s not related to yours) and Samsung S Planner, both worked for me.
Which calandar app do you use? Can you try another one?
