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? Can I use my voucher overseas? How do I use my voucher at a cartel? What are your customer service operating hours in order for me to contact you? How do I get a voucher code? Comments 0 comments Please sign in to leave a comment.