Lightroom Classic on the fritz - help!

Okay, I'm at a loss at what's going on and I desperately need some advice.

Lightroom Classic seems to have gone crazy. It will not save any of my AI masks (select subject, select sky, etc.) or the generative AI fill. Every time I navigate away from the image with either of these, I got a little triangle alert saying I need to update my settings. If I do this, the AI masks comes back, but as soon as I move to the next image and come back to that photo, the triangle is there again. I was in a time crunch and so I spent time manually exporting individual photos. Suddenly, asking Lightroom to export a photo took 5 minutes. The loading screen to save the export. It also takes an extremely long time to erase rejected photos from Lightroom and to open a photo from Lightroom to Photoshop.

Additionally, Lightroom will no longer back up my catalog. It keeps giving me an error to check permissions on my computer.

I've restarted my computer, I've restarted lightroom, I've uninstalled and reinstalled lightroom. I've installed an earlier version of Lightroom. Nothing changes the problems I'm having. I'm at a loss as to what to do. Any advice or help would be massively appreciated.

I'm on a Mac and currently have version 13.3 installed.