Sims 3 DLC's not accessible on the game's launcher
I only have 4 DLCs for Sims 3, and have since around 2016/17, they all came on disk and were registered with Origin then merged with a newer account more recently. Upon installing Sims 3 on a new PC, everything installs properly within the EA launcher, but when I open the Sims 3 launcher, the only DLC I can enable is Late Night, when I own "High End Loft Stuff", "Pets", and "Seasons" as well. All of which appear to be installed within my game's files, but do not seem to be acknowledged by the game's launcher.
I've tried repairing the game, uninstalling and reinstalling several times to no avail. I've also looked for other fixes, but they're either regarding having content removed due to faulty purchases (which didn't happen here), or have no response.
I do not have any custom content, nor mods. This is my first time reinstalling the game in years, so this is a completely clean installation.
Please check your account now and let me know if you can download and access your DLC.