I had the same problem but I used my battletag instead of my e-mail -- maybe that's the problem?
I have this same issue, I am guessing it means the servers arent up yet? if so that is not a user friendly way of letting us know...
Use your email address not your account name! Wont really matter thought because the servers are all busy.
You poor kids. You don't even know you are supposed to use your EMAIL address not BATTLE TAG
You have to use your email to get the button to highlight, but then you get the message the servers are full, error 37. LAME