Same issue here, mostly in the evenings (GMT+1)

I can't join a single server for 2 days now.
My DayZ version is up to date / same as server.
Tried empty/half full/full servers, always the same message:

Confirmation of Changes
Der Verbindungsvorgang ist gescheitert. (Connecting failed)

I tried in Steam right click on a friend -> "Join Game", but then i just get stuck at "Warte auf Host" (Waiting for Host).

If i click on "View Game Info" i get "Server: Game status is unavailable".
I tried with and without Steam Beta Update participation, both don't work.

In the main menu i still see my old character from before the database wipe.

Didn't work for me, tried Change Server 4 times.