Re: [CURRENT ISSUE] Sims 4 DLC shows as installed, won't load in-game

I have several saved games on my profile that I have played using Packs that I've purchased before (e.g., Cats & Dogs, Snowy Escape, Vampires, Werewolves, etc.). Several days ago, I tried playing my games, but the saved games won't load. It shows that I need a bunch of required packs, which I have all of them. It lists predominantly Cats & Dogs as the one I need, but even when I click on the required packs, it shows I've purchased and installed them. (Screenshots attached below.)

I launch from Steam and it shows that I have all the packs.

What could be going on and how can I fix this?