Sims 4 won't let me play... well...

I haven't played since about April, and that might be the problem. I can't tell if it's because I haven't updated and/or played in so long, but the game refuses to work.

I can open it, get to the main menu, but I can only play, not do CAS at all. I was trying to create a new game from the main menu, and the screen turned complete white, not letting me do anything other then CTRL+ALT+DEL and sign out. I cannot CTRL+SHIFT+ESC.

I can play the actual game, but if I want to edit a sim in CAS, it will not let me, it just does the blue screen with the plumbob and recommendations forever.

For solutions: (this has been stated before)

I would need a walk through on how to delete and reinstall (as well as saving games)

This is a family computer. There's Microsoft Family settings, an ad-block, and possibly Malware blocker.

A while back, I had problems with One Drive, but the solution to that last time didn't work this time. I've signed out multiple times, and restarted the computer once.