Re: Expansion packs missing
@Ninapoppy Try repairing the game through Steam: right-click on the Sims 4 game tile and select Properties > Local files > Manage integrity of the game files. And be sure to launch the game directly through Steam, not through Origin.
If this doesn't help, please post a screenshot of the contents of the game's program files. In a Steam install, this is the default location:
Program Files (x86)\Steam\steamapps\common\The Sims 4
I'd like to see the contents of that Sims 4 folder. This is not the user folder in Documents > Electronic Arts but rather a separate location.