You should be able to download everything from the Origin client, so download from there and log into your EA account and all of your purchased games should be there.
ORIGIN Client software Origin Client for PC.
Log in the client, if you've registered the games at thesims3.com, the games should already be availble for download.
If you didn't, you should be able to redeem the codes.
This link will show you how to reload, https://help.ea.com/article/purchased-download-not-visible-in-origin
Redemm your code, https://help.ea.com/article/origin-code-redemption-faq
Hope this helps
-------------------------------------------------------------------------------------。 Cheers 。---------------------------------------------------------------------------------------
► ✔ Please don't forget to resolve your question if this helps as it could help others & all . Click XP for my effort in helping! ◄
***Please note...I do not work for EA/Origin. Questions belong in the forums,Solution is like medicine,same medicine/solution may not work on same problem.I'm helping you because I'm also a victim of EA for releasing their half baked products to us,gamers.
I don't answer questions via PM. AHQ is "Player-to-Player" technical self-help forum