Hey, this morning I was gonna log in but i couldn't. It said that I need to convert my account to a battle.net account. And like, I've been playing on this account all week, I even raided last night. So I click on the link and get to battle.net, and they want me to write my game key to be able to play.
I bought the game online couple of month ago so I found it on ''Order history'' on the website. But it didnt work, it said: You have entered a World of Warcraft® key that is currently not supported in Battle.net account management.

I have no idea what to do, please help. I got raid tonight at 9 uk time.
Thankful for anwsers.