Please check the following:
- Check the username is the email address used to create the account
- Confirm if there are any errors on screen
- If correct username and no errors on screen, change the password and contact the administrator
This can also happen after a series of incorrect log-in attempts have been detected within a specific time frame. Simply wait an hour before making a new log-in attempt. If you are unsure about your log-in credentials, you may reset your password via the 'Forgotten Password' function in the log-in screen.