1- Click on your profile page as shown in the image.
2- Copy your account ID by clicking the copy button as shown in the image, then go to the following link to activate the voucher: Click here
3- Enter your ID in the first field "Enter Your Account ID" as shown in the image.
4- Enter your voucher code in the second field "Enter Voucher Code" as shown in the image.
5- Click on the "Redeem" button to receive the value of the voucher you own.
Note: Some vouchers have an expiration date, and you must activate them before they expire.