User access to the Internet over your portal can be rejected for various reasons.
Better insight into the facts can be seen from Rejected Logins panel.
Top rejected users last 30 days is available as a pie chart with the user percent in rejected logins and a list with 10 top rejected users with the count of rejected logins.
Top rejected reasons last 30 days is available as a pie chart with the reasons in percent in rejected logins and list with 10 top reasons to rejected logins with the count of rejected logins.