KnuckleWoods: Hit PLAY NOW and then the screen will come up asking you to continue your game or forfeit .
This is what he's talking about but that's also when the problem begins. You get that screen, hit Continue game and the big Continue button is greyed out. You're stuck. I've even tried a different browser when this happens and it still doesn't let you back in.
When you say reboot do you mean the whole computer or just your browser?