The receipt shown on the Wellness Outlet after checkout shows the total value of your order prior to the application of any payments (gift card/coupon code, or store credit). As long as the payment was shown prior to completing your checkout it was successfully applied to your order.
You can contact the Wellness Outlet team at thewellnessoutlet@motionconnected.com or reach us at (toll free) 888-593-8868 option 2 or (direct) 920-593-1918 if you would still like verification or a copy of your invoice which reflects your credit/discount.