Are you 100% certain you are entering the Password correctly that is listed on your voucher? Note: this is NOT your unique voucher code. It is NOT your security code if you booked with GroupOn. It is not a made-up code. It is the Password listed on your voucher under “Redemption Instructions”, or “How to Book” or another similar title on the Voucher you were sent by the discount website you booked on to. It is the password precisely as it appears on your discount site voucher. It is there, on your voucher, and if it isn’t then you’ll need to call the voucher website in question.