Creative Cloud won't sync OR delete anything

Hello, 

I looked up so many posts across the internet but can't find someone with the same problem, so here we go: 

My cloud will not sync files on my computer as soon as I add a new file/folder. It always says "syncing..." but nothing happens. and IF something happens it says it syncs 15/200 files and then it just stops. Doesn't matter if I upload them via the desktop application or the browser. 

Currently, I don't even use 50% of my 100GB, so it can't be that. 
When I upload files via the browser it doesn't upload all of them, no matter how often I try to upload them again, the Cloud just ignores it. Very infuriating. 

When I want to delete files via browser it tells me some files couldn't be deleted. It's not some files - it's every file I try to delete. No matter what. 

I've had this issue for months now and reinstalling the cloud didn't help. Everything feels very unreliable and I can never be sure the cloud works as it should be.