Unable to buy PaperZD in the store

Hi, I’m trying to buy the PaperZD pluggin and each time I try it just says “Unable to fullfil the request, contact your bank” or something like that (Mother Language is Spanish), I contact the bank and it says that is Epic the one not accepting the card, that I should try later, I did, and still unable to buy the pluggin, and clicking the help link it just send me to Fornite support, nothing to do with UE4 pluggins, according to the checkout page Epic accepts American Express, but it fails everytime, and yes, I fill the paycheck form, is at the moment I hit Place Order that the thing just fails