Paypal stopped their work in Turkey some years ago so our option to buy supporter or second team is superrewards points. We could buy it with credit card and i did it twice with master card but can't now. I don't think it's a bug so i don't write it there. And the error i get is "Sorry, MasterCard is not supported for this payment. Please use a different credit/debit card or select another payment method." Why MasterCard isn't supported any more?