Used code for the Sims 3 dragon valley

if the code was redeemed in origin that can make the code invalid you'll need to contact CS if that happened the code should be redeemed in your the sims 3 account

guide to worlds and how to redeem your codes in your the sims 3 account

http://answers.ea.com/t5/The-Sims-3/Guide-Sims-3-Store-Worlds/m-p/1589911/highlight/true#M155145

if in the event you need to contact CS

1.https://help.ea.com/en/contact-us/
2.Click on the orange NEXT button
3.Select a platform
4.Click on the orange NEXT button
5.Select a topic and describe your problem in a few words
6.Click on the orange NEXT button
7.Click Chat Now to chat with a Game Advisor


guide on how to contact CS

http://answers.ea.com/t5/Beta-Archive/How-to-contact-a-Game-Advisor-using-the-new-EA-Help-page/td-p/2161281