Carding Amazon and Wal-Mart successfully shipped. How to carding e-gift card

[Jenn67]

I want to carding an electronic gift card.
I successfully carding Amazon and Walmart. (100usd) (The shipping address is the credit card holder's billing address).
After shipping, I use this account to sort out the gift card. However, after successfully receiving the shipping email. When I carded an electronic gift card, CC was always dead. Anyone, have better suggestions?
My goal when carding electronic gift card