I have sent a ticket a few days back but I haven't got a respond so...here I am seeking for help to resolve this issue that I'm facing. My Mastercard transaction couldn't go through and this error surfaces every time I attempt to sign up to become a platinum fundraiser, "Please verify your card number and expiration date." My card is absolutely working fine with purchases on other websites. I have tried to make payment using PayPal but due to Paypal international regulations on Singapore, I am unable to make the transaction and that leaves me with only the card transaction method for payment. So does anyone have any idea or faced this issue before?