Someone(maybe you accidentally) changed your account info. Eitherway just wait on support right now.
Under support there is a specific thing for possible hacked account please use that.
It is under
1. Login Issues
2. I need help with.... "scroll down to hacked account"
3. Fill out all info. * They will need your Gw2 Serial code for "best"/fastest chances
If you can take a ss of your billing statement showing your purchase of gw2 that would also help.
Ignore if you have already done that.
Edited by dawnq, 24 August 2012 - 02:37 PM.