If you have received an email informing you that you have received a gift voucher, the message will show a link that will enable you to use this voucher. You will need to create an account to be able to use the voucher. There are several methods to use a voucher:
1. By clicking on the link in the email.
This link will direct you to a page requiring authentication. Use your login details or create an account if you do not have one yet. The voucher will then be validated and credited on your personal account. You can use it whenever you like.
2. During the order validation process, on the payment method selection page, one button gives you the option of using your personal account credit.