After selecting the products you want to purchase, go to Cart and click on + as shown in the picture below:
In the dedicated field you should enter (or paste) the code, paying attention to blank spaces after and before the cose; then click on Apply coupon.
The code is valid when you see it applied to the total amount of your order, as you should see on the right side of the page.
Finally, click on Proceed to checkout to choose the payment method.
Terms and conditions of use depends on each single coupon code, that could not be used in conjunction with any other offer or applied on products already on sale. For further assistance in the matter, please contact our Support Team.