After you have placed your desired item(s) in your shopping cart, enter the code in the field marked ‘Promotional Code’ and proceed through the rest of the checkout process. There will be a similar field on the final page of checkout, as well. Only one code valid per order, can not be used in combination with other codes. Promotional codes can only be used once per account. If the code is not working, check to make sure it has been typed in correctly. Also check the expiration date for the code.