To use a coupon, you will first need to have something added to your cart and then be viewing the cart as shown:
The coupon field is highlighted above. To apply the coupon to your order, you must type the coupon code into this field and then click the "Apply Coupon" button next to the coupon code field.
Once the coupon has been applied, your order total will be updated and the coupon being used will be shown above your new total as follows:
You can now proceed to checkout with your discounted price.
Note that if the coupon has been correctly applied, the total should be updated in the cart view before proceeding to checkout.
You can now also enter a coupon from the top of the checkout screen:
Clicking the text in the banner will provide with a pop up similar to the cart page coupon entry:
And just as before, after typing the name of your coupon code into the field next to the "Apply Coupon" button, and then clicking the button, your coupon and new total will be shown in the order information table.