Hello,
It appears that the command prompt is not working properly as expected. Could you please check if you are experiencing the same problem on a new user profile?
Click Windows + R key, type netplwiz, and click ok.
Select Add > Sign in without a Microsoft account (Not recommended) > Local account.
Enter a temporary local username and password.
Once the account is created, select the local user profile > Properties. In the Group Membership tab, assign admin permissions.
Once done, sign out from your Microsoft account and sign in to new local admin user profile.
See if you can access command prompt and settings (Sign in options) page there.
If you are able to access them on new user profile, let me know.