Hello, you can use your gift cards on both a one-time purchase and a new subscription in checkout. Simply copy & paste your gift card code into the 'discounts/gift cards' box on the checkout, your gift card amount will be applied to your total and you will only need to pay for the balance.Unfortunately, it is not possible to apply your gift card to an existing subscription in your personal subscription dashboard. This is a software limitation so if you need to do this please reach out to our customer care team at hello@eatpropergood.com and they will be able to manually add the gift card to your existing subscription for you. Apologies for the tech limitation here. Luckily we're better at cooking than we are at tech :-)