My friend used my iphone to play a match. He logged out my account and login his account. After the match, I have just found that I can not login my own Facebook account on my own Iphone to play the game. When I was trying to login with my facebook account, It just keeping tell me I have already authorized Top Eleven as a football manager, And I can not login my own account. I am so mad at him right now. What should I do reuse my own account on my own Iphone.