In the first page of your basket click on "Enter the promotional code" then "Enter the promotional code". You will then be able to enter your code in the "Promotional code" box and finally click on "Send" to apply the discount.
In the first page of your basket click on "Enter the promotional code" then "Enter the promotional code". You will then be able to enter your code in the "Promotional code" box and finally click on "Send" to apply the discount.