In order to redeem a voucher you need to be logged in to your account. At the status area where you can see your balance you will see “Redeem Voucher” klick on it.

Redeem a voucher

Another way would be: klick on the tab "My Account" on the top navigation of the page. After your "My Account" Area is loaded you will see a second navigation bar, the third option is labeled "Vouchers" please klick on it. On the next page you will have a field where you can put in the voucher code. After doing so, please klick on "Redeem Voucher" right to the input box.

Redeem a voucher

A popup will tell you if the redemption was successful.