If you were from Thalia I'd say add AU to the front of your login name, but that will only apply to you if you actually were from Thalia.
How long has it been since you logged in? Have you checked out all the information that went with the server mergers?
This post might clear up a few things.
I'm not sure why everyone so far thinks you are on the wrong region, there is no evidence to support that theory. Good luck though, and welcome back to the game