Cant login

Hello,

I opened my Battlenet app and tryed to login to WoW but this message:

Whoops! Looks like something broke. Give it another shot.​
Error Code: BLZBNTAGT00000BB8

So, i went to Scan & Repair;
After that it said WoW needed a update, wich i did;
Again it started to Scan & repair and it did this already 4 times.

I unistalled the App and Installed it back but it didnt solved the problem, its still on Scan & Repair, update and repeat.

I cant login…

Any ideias on how to solve this?
Thanks