You can use a promo code if it is still active at the checkout.  When you reach the payment screen, a field with the label "promo code" will be visible.  Before you pay, click on it and enter your promo code in the box. You can use a promo code if it is still active at the checkout.  When you reach the payment screen, a field with the label "promo code" will be visible.  Before you pay, click on it and enter your promo code in the box.