Impossible to link my bnt account

Hi. im sorry for my bad english :’).

Im tryng to log my account bnet to warcraft logs but it says that my account is already linked to antother account. So i came in my bnet account to delet the authorization for warcraft logs and try again but all the time the same message.

I do not understand what am i doing wrong, someone can may be help me ?

Thx all,