Re: Sims 3 wants me to register my game with a serial code I never got?
@Despop919 Creating a new account won't help you, as your packs and store content are all tied to your original account. Even if you had codes for your packs, you wouldn't be able to reregister them.
You can try clearing all of your browser caches, including the one for Internet Explorer, Even if you never use it, the launcher does for some purposes. Be sure to uncheck the box to preserve data for favorites.
clear IE cache: https://kb.wisc.edu/page.php?id=15141
The other thing you can do is go into Documents\EA\TS3\Downloads and remove the file that's labeled [your email].bin. Sometimes trashing that file helps reset things.
Can you currently login to the Sims 3 store? How about Origin? If so, try changing your password, clearing all of your browser caches again, and see if that helps.