Checkout with coupon when no coupon is offered, Google Checkout

[mohammed.khalilia]

Hi,
I have my site live for less than a year and that is my first time encountering a problem like this. A week ago a customer checked out and his bill at the end was $0. After looking through the order we noticed that the payment method was Gift Certificate/Coupon. We only have one Coupon Admin which is which is $5 off. Any idea or clues on what is going on?


Zen Cart Version: v1.3.9h
Fresh install
Addons: Google Analytics, add customer from admin, Google checkout.
The site has new look and feel and integrated drop ship products

[mohammed.khalilia]

Anybody? please!