Pandaria Stuck on "This Account Needs to be Converted.." when logging in on MOP

[FistofInfernal]

Hello, I just started playing wow again and i tried downloading MOP.
After downloading i noticed that after entering my username and password and pressing enter a popup comes and it says that My account needs to converted, I have tried many things already but none seem to work im I used to play mop warmane 6 months ago and this is the first time i got this problem.

[FistofInfernal]

Hello, I just started playing wow again and i tried downloading MOP.
After downloading i noticed that after entering my username and password and pressing enter a popup comes and it says that My account needs to converted, I have tried many things already but none seem to work im I used to play mop warmane 6 months ago and this is the first time i got this problem.

I tried changing the realmlist many times but it still doesn't work