Stop in for a cup of coffee

Johnny Mac said
Both. I usually just have it on "stay logged in" and it kept taking me back to the login screen, so i re-typed it. tried a couple PC's...no dice. waited 8 hours or so and it started working as normal.

I had same issue sporadically yesterday, clear your cache and cookies. Retype in the fabo URL and it should work. That's what I think fixed mine