PIN is unavailable

After I changed msconfig to reboot into safe mode, I have stuck on login screen.
I have 'PIN unavailable, set new PIN' message, but setting new pin does not work. Actually, clickin it even tries to open ms store to look for an app sometimes... of course that also does not work in any way.
I enabled administrator - not showing.
I reset ngc - no help.
Moved that folder only to see empty login wallpaper.
Changed MS account password, no effect whatsoever.

What else can I do?
Please help me guys...

CMD shows Windows version 10.0.19041.631

No, unfortunately not.
I would make use of it in that case. I even changed Ms password, hoping it will have some effect, but no luck there too.

See How to - Escape from an MSConfig-induced Safe mode boot loop

Also have tried that... Entry identifier is not valid.
I get only very short content when bcdedit.

Windows memory tester
-----------------
identifier {memdiag}
device partition=C:
path. \boot\memtest.exe
description. Windows memory diagnostic
locale


And that's it.

PS. My system drive letter in this environment is D.
My system disk is GPT.

So, guys, no idea what else can be done to save me reinstalling this tonne of software from the scratch?

Not sure what screen exactly you need, but here I enclose
1. no pin message:
2. When click create pin, look for app in store? message:
3. bcdedit gives that:

Thanks for trying to help!

Something happened and your pin is unavailable. Click to configure new pin.

When I click set new pin for a short while it says Please wait and then MS Store dialog box pop up. Clicking this also does nothing on the user side...

- - - Updated - - -

Something happened and your pin is unavailable. Click to configure new pin.

When I click set new pin for a short while it says Please wait and then MS Store dialog box pop up. Clicking this also does nothing on the user side...

And MS Store dialog says:
Search for an app in store?
This task requires an app