Okay, don't laugh at me :D But here is the solution for all those who have been as stupid as me ;)
After weeks of despair, here is the solution...
If you are as clever as I was, there is a 100% chance that you used another repeater instead of a container for the order overview.....
This results in no voucher codes being recognised
Hi Jorg, Is it possible there is some information missing from your post? Eitan