Printing from Macintosh Manager

I have a few questions to ask regarding Macintosh Manager and printing

1. I have users in Macintosh Manager and the workgroup part of macintosh
manager, I have giving user access to a network printer via Apple Talk, it
is an HP Laserjet 1200 with a Jet Direct box.

2. I have giving the user print credits of 4 print credits in 365 days.

3. When the user logs in and prints if he prints 5 pages it says ” You have
exceeded you print quota” it then only prints 4 of the 5 pages.

4. When user tries printing again it prints without enforcing print Quotas.

Is there a reason why this is happening.

I have attached a copy of the print report to this email. 🙁