Hi,
Achat has been doing some background maintenance.
Try again to see if it works, if not send a message to “Support” and they should be able to help.
Support can be accessed on the Menu bar at the top of this page.
If your account has been inactive for 6 weeks and you have never paid to play, then Achat does have an automated system to remove those accounts from the game.
If that is the case, you will have to create a new account.
Only players who have paid on their account can reactivate their avatars by logging in again.
Hope this helps. Let us know how you get on.