On the Select a payment method page or on the Place Your Order page of the order form, enter the coupon code in the Gift Cards and Promotional Codes section exactly as specified. Select Apply. Don’t add spaces before, inside of, or after the coupon code.

Next:
Proceed to checkout. Verify that the coupon code was applied successfully by viewing the price on the final checkout page before placing your order. If, for some reason, you don’t place an order at that time, the promotion remains on your account until it’s used or expires.