that user is shown on page 11 of the users list, see link in private section
the eighth user on the list.
The users list has no ordering to it, so it may not show the users in order by ID.
if you like, you can edit the recordset on the Admin/users_results.php page so that it uses the ID for the Order, change:
$query_WADAusers = "SELECT UserGroup, UserID, UserEmail, UserFirstName, UserLastName, UserEmailVerified, UserRegistrationDate, UserIP FROM ps4_users LEFT OUTER JOIN ps4_usergroups ON ps4_users.UserGroupID = ps4_usergroups.UserGroupID";
to:
$query_WADAusers = "SELECT UserGroup, UserID, UserEmail, UserFirstName, UserLastName, UserEmailVerified, UserRegistrationDate, UserIP FROM ps4_users LEFT OUTER JOIN ps4_usergroups ON ps4_users.UserGroupID = ps4_usergroups.UserGroupID ORDER BY UserID ASC";