Personally I have no idea but I find it very hard to believe the club were knowingly selling thousands and thousands of tickets to German addresss and credit cards.
Me too but that's what I was told last night.........
Can see how it might happen - easy enough to get Arsenal membership online, someone then decided prior purchase history not needed for a European game, lots of the process outsourced to some kind of call centre (like ours is) without enough controls, so the tickets get issued.............