My Games Are Missing

In 2011, I saved the codes from The Sims 3 and its expansion packs on the system that was Origin at the time. I had a lot of expansion packs. Now I don't have access to those DVDs. But when my account was transferred from Origin to EA Play, my games didn't arrive. How can I access them? I just found out that the Origin app is closed. And I miss my Sims.