i need some details here.
so 75 fantasy said hes using a iphone, that narrows down his problem > get a new phone

What about the others.....are you on a phone as well or a computer? what web browser are you using? Internet Explorer? Firefox? Google Chrome?
I am using firefix and was able to log out and back in without any issues. I even tested a non-admin account as well. I need some more details so i can troubleshoot it.
thanks!