I had issues trying to get a free code for this game, but I think I have it figured it now. Once you sign-up at Red Roof, use the following link to sign-in and your free code will be supplied. Hope this helps, for others who may be having problems. Once on the page, click where it says, "Click here to enter your game code now."
http://redroofcountryroadgame.dja.com?loc=emailconf
http://redroofcountryroadgame.dja.com?loc=emailconf