So the link allows someone to pay for you using his/her own card instead of yours?
Oh my god. So glad that I found this thread. I’ve been trying to pay via the link that my SA sent me multiple times, using multiple cards on different computer/ipad/phone and none would go through and apparently none of my cards even got the attempted charge. I forwardEd the link to a friend of mine and she was able to pay on a second try. This is so weird and I think it definitely has to do with the payment system instead of our cards.