Why do I get a message saying I've exceeded my limit of simultaneous users?
Most often, an error message about log-in limits is caused by one of two things:
1. Someone using your account didn’t log out before closing his or her browser window. If this is the case, you’ll be able to ignore the error message and log in despite the warning. The best way to prevent this from happening is to remind all users to log out when they’re done with their BrainPOP session.
2. There are more people trying to log in to your account than are allowed. Check the number of simultaneous log-ins associated with your account.