I preordered this latest expansion pack and installed it. However when I entered the sims 3 website and tryed to register my game to receive my free stuff it came up with serial code invalid. How is this possible? I really would like what I paid for....
Any help on this matter is invaluable.
Did you order your game from the Origin client? If yes, then you don't have to register it on the Sims website. Your Origin account is your Sims account, it does not matter where you register it, both Origin and the Sims website will "know" that you have the game.