August 2020
I have downloaded a few of the expansions and on Origin it says it is downloaded but when I go to the launcher, quite a few of my expansions are not in the expansion part of the launcher.
August 2020
@Minxkit Try repairing the game in Origin: open your game library, right-click on the Sims 3 icon, and select Repair. If that doesn't help, clear Origin's cache, and if that doesn't help either, uninstall Origin "the hard way" and reinstall.
https://help.ea.com/en-us/help/faq/clear-cache-to-fix-problems-with-your-games/
https://help.ea.com/en-us/help/origin/origin/manually-uninstalling-origin/
If none of this makes a difference, it's possible your missing packs have been deactivated or blocked. The only way to find out whether this is the case is to contact EA customer support and ask about the status of those packs.
https://help.ea.com/en/contact-us/
August 2020