Hi there! We'd be happy to help you navigate your account, @Sarahtw. To use a coupon, simply check the box next to your “Discount Code" during checkout and the full amount will be deducted from the total price to complete the transaction. To view your available credits while not in the purchase state you can head to your "Profile" and the discounts are under your "StubHub Wallet." You can only view discounts in your "Wallet" on a mobile browser or desktop/laptop computer. Discounts within the app can be viewed during checkout.