Can't get half my EPs, GPs, SPs and kits to show up in my game???

For starters, hello and thank you for even just reading this.  If there's anyone that can actually help me out I'll be eternally grateful!

My Sims4 game is saved on an external hard drive that I plug into the computer and start up the EA app and boom bang bing, the app recognizes where it is and the game runs like a charm.

Until now.  Because see, I had only some of my assorted add ons installed in my game.  My choice at the time because of not liking some features of some of the assorted packs and so on.  But I decided tonight that I'd like to add in what I hadn't yet, and went to do so.  Thought it worked.  Started the game up, nope, worlds and stuff from those add ons were not in my game.  As if I'd never added them in at all.  So, I did a game repair.  No dice.  I uninstalled my Sims4 game completely from the external hard drive, the reinstalled it and then re-downladed and re-installed all my add ons for the game.  Start it up. 

Nope.  Game works fine but only with the add ons that I had been using before, not recognizing at all that the rest of them had even been downloaded and installed as well!

Please.  Is there someone who can please advise me on what to do here so that I can use all the content that SHOULD now be showing up in my game but isn't???  Pretty please with sugar on top?