On the Checkout screen:
1. Fill out your Email, Contact Details and Delivery address
2. Enter your birthdate, if you are purchasing alcohol
3. Enter the coupon code and click "+". You will see a coloured banner showing the amount discounted from your order and the new total amount to pay
4. Enter your payment details
5. Click Pay Now. When the order has gone through, you will see the order confirmation screen and also receive an email confirmation with invoice
Please check that you’ve entered the coupon code correctly for it to work on your order.
Note that some codes are limited to particular sellers, whereas others can be used sitewide.