Cant log off account after using it in Facebook

missing exit button lower right screen

cant go log in screen to log in >_>

Not sure if this is of much help, but from what I've heard

-The problem might be browser specific, try another browser (out of interest, which browser are you currently using?).
-Try playing Supermechs on another site (such as the Supermechs official website).
-While in Supermechs on facebook, try disconnecting your internet. This should disconnect you from the server, and bring you back to the login screen.