This means that you can't cover your total with two Visa gift cards, or use up the remaining gift card balance as a partial payment and cover the rest with another credit or debit card.
If using your personal debit card for online shopping makes you nervous, then a Vanilla Gift Card is a safe alternative. Here ...
and not using as gift card at all. So before you add the card's balance to your account, you need to make sure the Visa is ready for action. And note that you can't split purchases between a gift ...