Connect Online will stop you from clocking in or out when your user rights are not linked to a department that uses Timekeeping or when you have exceeded the maximum number of times you can clock in or out.
You'll need to talk to the application administrator for assistance. They can check your user rights and adjust or reset the number of times you can clock in or out if that number has been exceeded.
How do I unlock a user who is locked out?
How do I add a new user?
How do I approve or decline timesheets? (Managers)