[Hellfighter]

it could mean some Novaworld change they way of the forum name to the log-in name and it seem maybe some one use your account and change the players name listed in it.

i would change the password asap
before some one other change it for you as in your prefile was change for unknown reason. change your password a must

you can change your password forum setting there and the forum name can be change ask the forum admin there they be happy to help you in this