This is why I suggested days ago to create a new Local Admin account to replace the corrupted and Temp accounts. I will give you these steps again so you can finally get this sorted out and done.
Test for account corruption by creating a new Admin Local Account in Settings > Accounts > Family & Other People > Other People, sign into it, see if problem persists:
http://www.howtogeek.com/226540/how-to-create-a...
http://www.windowscentral.com/how-change-user-a...
If you're blocked from creating a new account, try enabling the built=in hidden Administrator account used only in emergencies, by one of these methods:
https://www.tenforums.com/tutorials/2969-enable... then sign into it leaving the password box blank, to create the new account as above.
If the problem goes away move your files over, test all programs run correctly or reinstall.
Then when ready you can delete the old and temp accounts in the same place as above, and convert the new account to your MS account if desired:
https://www.tenforums.com/tutorials/5464-delete...
https://www.tenforums.com/tutorials/5375-switch...
You can also try repairing the account or install using a fresh set of installation files running a Repair Install as shown here: https://www.yourwindowsguide.com/2016/06/how-to...
I hope this helps. Feel free to ask back any questions and keep me posted. If you will wait to choose if I resolved your problem, I will keep working with you until it's resolved.
Most likely, that first link is what I did to create the MS account which I a m having problems with (as it suggests using an e-mail address). I would like to see if there is some way to contact Microsoft to get them to fix the problem with them not sending verification codes to my e-mail and phone number. Obviously, I cannot remove that feature without waiting 30 days. I can see that the option is available to repair my original account, but I will need to try to back up data from the command prompt, and it seems that there is no guarantee that it will remove the Read Only block.