Purchased new from amazon, serial code invalid on sims3.com

Invalid or Used Serial Codes

• It seems that if you get the download version at Origin, your game is automatically added to your account at thesims3.com IF your accounts are connected. It just doesn't show up under registered games cause the icons are broken. Try redeeming your limited edition codes anyways (see below) and also log out and back in on thesims3.com
• Make sure you've typed the code correctly. 0 and O, B and 8 and 2 and Z look very similar, so try both variations if you're not sure
• If you use the product code at Origin, try the one in the email instead if they are not the same or the other way round
• Contact Customer Support. If your code is indeed already used or invalid, only they can help you since they can look into your account. If you have proof of purchase, they can issue you a different one.

Invalid Redemption Codes

• Do not attempt to redeem those codes at Origin. It will render them useless and you will need to contact Customer Support.
• This post lists all still valid links: How to redeem the limited edition content. You need to redeem the right code at the right page or it won't work.
• Contact Customer Support. If your code is indeed already used or invalid, only they can help you since they can look into your account. If you have proof of purchase, they can issue you a different one.

Source & More info: http://answers.ea.com/t5/The-Sims-3/FAQ-Invalid-and-Used-Serial-Codes-amp-Games-not-showing-up-in/m-p/194028