82.0.432.3 just "killed" Windows sync settings

I decided to write a new message to make things clearer about how I sort of fixed the problem...
Anyway, I did eventually resolve the problem, but to just be 100% sure, I decided to re-install Windows as I have plenty/too much spare time anyway....
OK so here's what  I did and here's what happened...
I went to create a new account on the same laptop, using the same credentials, I thought that this wouldn't work seeing as it says I'm already logged on, albeit a temporary profile. The funny thing is, that sure, it was a temporary account, I couldn't delete any apps or anything like that, I still had a few of my programs installed on it, so it was more of a temporary log on, even though this log on always showed up in the login screen anyway.
Eventually, I created the profile, logged in, and it managed to either delete my temporary profile, or convert it into a full one. That I don't know, but I was left with one account overall, not 2, and it restored my permissions and stuff and remained unchanged.