Is the server still down? I can't login, it's saying incorrect username or password.
Don't say that you don't know what is wipe, and that you haven't registered your character, because all data been deleted.
If not, then... your character name and password really incorrect.
Edit:
Also
now it's off to fix a bug, so try a bit later.
Edit#2:
Rollback was really hard,
My character rolled back on very much time, while all items saved before server went down.