I'm fairly certain that AndreyT is correct
In order to send feedback through Windows Feedback app you have to log into the Freedback app using an online account. This is natural and this is expected.
However, you don't have to convert your local Windows account into an online account. Your Windows account remains local, you just log into the Feedback app (and only into Feedback app) using an online account.
I'm going to back you up on this though ... for about a month some setting son my machines (both Win8.1 and Win10) were getting reset to default (File Explorer view & Time). It too drove me crazy (Malware...Updates, Sched Maint...???)
I kept checking my settings and correcting them, then about a week later .... had to do it again. I originally thought it might be the appraiser pgm, but then time was defaulted to Pacific ... The two could be unrelated bc there was a cumulative update on tyhe ten machine. Still for both issues to be resolved by WU - well, what can I say?
I don't think I did anything to resolve it and I've been keeping an eye on my View and time ... so far so good.
The only things that changed were by WU ... I did notice a Sched Task: Time that was not running, but even launching that by hand did not help it. I ran Internet time - nope didn't help. I changed the time service from Windows to nist, updated and that seemed to fix the sched task - it ran successfully one the next cycle.
So, what can the user do?
Run WU manually
Make sure your date and time is set correctly and internet time updates - try using the nist time server
That's all I have.