Your account has been sent to studio for fixing ( there is no timeframe )
to subscribe for now, if you install the game via steam and login and play on a character to be sure the accounts are linked , you can then subscribe via steam whilst this gets sorted
steam is the only way to activate a subscription on that account at present, you can wait for them to email you saying it is fixed , but there is no time frame provided on when that can occur
i have no time frame on a fix at this stage, you always have the option to make a new account that will work ok to subscribe too
i cant offer better news i am afraid
