Re: Can't register my Sims 3 game online.

You can find all information on how to register your game here:

http://answers.ea.com/t5/The-Sims-3/Information-How-to-Register-The-Sims-3/m-p/387162

If that does not work for you, please get in contact with an EA Game Advisor.

You need to log in with your Origin account and then choose "Product", "Category", and "Platform" to see the contact options. Please choose phone or chat as contact option.