Re: Sims 3 expansion packs completely disappeared from origin
@Skittlessimheart You'll need to contact EA customer support and ask what happened to your packs. If you still have the email receipt for your purchase, you can take a screenshot and upload it when submitting the help request.
https://help.ea.com/en/contact-us/
You can also look up the order number on ea.com. Sign in, open your account settings, click Order History, and you should be able to find a listing for each purchase. Be sure to expand the time frame if you bought them more than three months ago.