Mac version not recognising installed Store content when logged in & more

Hey, so I copied my save data from Windows to MacOS, and while the game and my saves, mods, etc, load fine, my store content does not recognise that it’s installed except for 2 pieces of content, despite still having multiple files in my DCCache folder and DCBackup folder, plus, I’m also signed into both the Launcher and in-game. I can’t however, log into the “In Game Store” browser while in game, (accessible when clicking Register while logged in on the main menu.) and clicking on Reload, does not work whatsoever.

I have tried to install my store content on a fresh save, but the launcher constantly crashes, especially when starting the game, regardless of what save folder I’m using. Selecting the Downloads or Installed Content tabs on the launcher will instantly crash the launcher if any content is installed or downloads are present (Sims3Pack) in the Downloads folder. (I have none since all of my content is installed so I have no need to keep them in there and I’ve backed  them up elsewhere.)