How To Add A Zip Code To A Vanilla Gift Card. After activation, look for an option to update the billing address and zip code linked to the visa gift card. You can check your gift card balance directly at the store.
You can then proceed to use the vanilla gift card online. You’ll enter the visa gift card number and the card verification number (cvn) found on the back of the card. If the card was mailed to you directly, the address and zip code may already.