How can I delete my eGift Card from the app?

On the checkout screen choose to add a new payment method.  You can pay with both Credit Card and Gift Card.  The Gift Card will take priority so if the balance of the gift card is enough to cover your order you won’t be able to add a Credit Card.   If the Gift Card balance is lower than the order total, then you can add other gift cards until your order total has been covered.  You can also save all these payment methods for future use for online orders.