If you're shopping on a mobile device, the gift card field can be a little tricky to find. At the bottom of the checkout page, you'll see your item(s) just above the "Pay Now" button. Tap on your item(s) to open your Order Summary. Once expanded, you'll find the field where you can enter and apply your gift card code. If you have any trouble, feel free to contact us. We are always happy to help!