I am not a developer so I can't answer with certainty but I think it's possible to happen, it's fair. The only thing that makes me think about it twice is that a lot people will complain about it specially if they lose their arena master title.
To see your highest rating per bracket Zeox need to remove the 2.7 achievements from all players but I am not sure if that will happen.
Yes this is how it supposed to work. From now on after this fix characters who haven't the 2.7k achievment will earn it only if they reach at 2.7k current rating at 3v3.
"Earn a 2700 personal rating in the 3v3 bracket of the arena."
Ok since your balance is positive now you have to message Zeox to unban your account.
For more informations look here http://forum.pandawow.ru/showthread.php?t=200797
Closed
Can you show me some screenshots of your issue. Give me more details about your problem for example are you getting any error when you're trying to log-in or when you run wow.exe?