How do I use my voucher online? Herna June 30, 2020 10:31 Updated Follow Simply enter the promo code at the payment page before checkout. Related articles Where can I use my voucher? How do I use my points? How do I collect points? How do I become IRVINS Danger Club member? How do I use my voucher at a cartel? Comments 0 comments Please sign in to leave a comment.