Unable to "check" card


Hi. I’ve tried to validate the cards on this page:


Card seems to be ok and it renders fine. However, I can’t send it to validate. Everytime I try it, I get an error message a few seconds after telling me that my card can’t be whitelisted.

My hosting provider is CDMon and I’ve found some topics here with people complaining on them. I’ve contacted many times with them about this issue but they only tell me that everything is ok and that there are no firewall restrictions, and so on.

Please, could somebody from Twitter manually check this address and tell me whether we have any problem in the hosting side or what are we making wrong?

Thank you.

PS: I’ve tried to find a solution first checking old topics but without success. Sorry if the topic has been solved before.