I Can't Register The Sims3 Monte Vista

You need to follow these steps:

1.Go to http://www.thesims3.com/

2.Make sure you are logged in

3.Go to 'My Page' then 'My Account'

4.Click 'Redeem A Code'

5.Click the '+' next to 'Redeem A Code'

6.Write the 16 digit code(serial number)

7.Accept the Digital Services Agreement

8.Click 'Redeem'. After you clicked it, it will tell you to got to the Purchase History. Don't worry if you don' see it in there. It will appear in maximum 10 minutes

9.When in Purchase History, click 'Download' under the item. It will open the Sims 3 Launcher and start to download it there

10.When the download is completed, select the item and click 'Install'. It will take maximum one minute to install it

11.You can now start playing The Sims 3 and use the item in the game.

I hope it helps. 🙂