Coupon Code For Esupplystore.com Can Gamestop Just Use The Coupon Code For You To Use The Coupon?

Can gamestop just use the coupon code for you to use the coupon? - coupon code for esupplystore.com

Ok, I received a coupon from GameStop and the bar code is hard to read. However, the coupon code is not visible. GameStop are not entitled to the coupon code for the withdrawal or the bar code is also required.