Tommy,

Comment 1: Do you think Xeams should prevent users from deleting the default admin account? I am sure, some users will disagree with that approach. In any case, if you mistakenly remove every account, add one back in before logging out. In the worst case scenario, you can always reset the password using instructions on https://www.xeams.com/ResetPassword.htm

Comment 2: There is no configuration for this. It's built-in.