In order to use a pop-up coupon code, you must copy the code during the time that the popup window is shown. Save the code to then apply it to your order in the coupon field. On every product page, such as the one for Mini Cards , you will see the instant price calculator on the right side. Once you get to STEP 3, you will see the area to enter your coupon code at the end of the calculator before you add your product to the shopping cart.