Recently when I started playing again in March, all the flooring in all of my houses are missing and have been replaced with these purple question mark tiles. Also, a lot of other flooring options are gone, the doors and archways in the university dorms don't work and the class times is glitching and telling my sim to go to glass in the middle of the night instead of the afternoon.
@monawhiterose For the missing textures, try repairing the game in Origin: open your game library, right-click on the Sims 4 icon, and select Repair.
For the class times, if the repair doesn't help, please start a new save and test. Let me know whether you still see the issue.
