Issues logging in a new account on Windows 10

I made a new child account for the first time in a Microsoft Family Group using an email address. Whenever I log in, it shows the blue screen with a loading icon that you normally would see upon logging in to a new account for the first time, and then it asks for the password to the email, not the actual account's password. It also seems to sometimes make a new folder in C:\Users named defaultuser100000, defaultuser100001, defaultuser10000.[name of this computer], or defaultuser100001.[name of this computer]. How can I solve this problem?

Thanks.

1 Answer

After setting a PIN, this problem was gone. I also deleted the defaultuser directories with no problem.