help with games

I have a Compaq HP with Mozilla firefox and I have Facebook and Myspace. Some of the games that I would like to play will not show the main page of the game. I can see the extra's like neighbors or gifts and others can see my stuff, but I am not. I have followed the instructions to upgrade my abode, still nothing, also with firefox you have to allow the site in exceptions but I can not get to that to edit. Can you help me with this?

 

Which add-ons do you have on Firefox? If you use AdBlocker plus or NoScript they may be blocking the game from running properly.