There seem to be some issues for some people in Germany getting through to Nintendos servers, I just got asked by MirkoD, who seems to have the same problems as I do - random error messages in the Zone viewer and generally no contact to the relay server. SignZ doesn't seem to have these problems... yet, but my current problems seems to be a result of something along the route (i.e. can't do anything about it but waiting). Right now, I can't seem to get to any MAC address, even my smartphone decided to stop working - but at least it doesn't seem to be anything on Nintendos side.