James I just caught this and have see the video many times, however we cannot seem to get the wordpress system email to work. When the email arrives, it only provides a link for a new user to the login page, and no temporary password is generated. The link in the email is not active to add further issues.
So new users must copy and paste the link to the login page and be mindful enough to press “reset password” to even create a password themselves.
We have the settings for the wp email turned on, and cannot see where there may be a conflict.
Hopefully someone can assist us. Still on 8.9.6 and because of bogus registrations, we are trying to have wordpress generate a password and verify the new user email works instead of users creating their own passwords.