1. Log in.
2. Put the items you want to buy in your shopping cart.
3. Press the Checkout button.
4. Create Shipping Information.
5. Press the Coupon Discount > Apply Coupon button inside the Amout Due.
5. Select the coupon you want to use at the bottom.
6. Press the Apply Coupon button.
7. If you proceed with the payment, it's complete!
Thank You.