Connection Problem / config.wtf (MOP)

Hello guys,

after I'm typing in my username and password the window "connecting" is popping up like normal but it isn't connecting unfortunately. What happens is I'm getting another window saying: "This account needs to be converted to a battle.net account. Please (click here) or go to (url) to begin the conversion."

Any idea what might be wrong? I had some problems with going fullscreen mode so I deleted the folders WTF and Cache. So probably some command lines are missing in config.wtf that might fix the problem?

Cheers

Igor