How do I apply a coupon at checkout?

The code is case-insensitive. It must be active, inside its dates, and under its usage limits.

1. Add items to the cart and go to checkout while signed in if the offer is per-customer limited.
2. Find the coupon field on the checkout summary.
3. Type the code the shop shared and apply it.
4. Check that the discount matches a percent or a flat amount, and that a minimum-order rule did not block it.
5. Place the order. You cannot add a second coupon on the same ticket.