Staples Cash Card anyway to use it online??

[Mustanggt]

I have a staples Cash card for $107 and trying to figure out how to use it online?? cant use coupon codes in store and seems thats the only place i can use this damm thing. I called and asked if i could cash it in and no go asked if i bought something and returned it would i get cash back no go WTF staples has nothing I want in store to pay full price with no discounts.