The Sims 4 Gallery issue.

PlumberBobYT​  That sounds like an EA App error, nothing directly from Sims 4, but the App could certainly interfere with your access to the Gallery.  So I would suggest doing a clean uninstall and reinstall of the App, although not the game (at this point).

Please use the free version of Revo Uninstaller, point it at the EA App, choose the Advanced scanning method when prompted, and restart your computer.  Download a fresh copy of the App installer and run it as an admin: right-click the download and select "Run as administrator."

Please have your antivirus disabled while installing the App, and after you reenable it but before you open the App again, set an exception again for EADesktop.exe, as the previous one may disappear when you uninstall the App.

If that alone doesn't help, I would continue to run the App itself as an admin.