GRE送分网站bug? 求救！！！

iSGUID：3545031

今天在加送成绩，用个工行的Mastercard信用卡
输入所有的信息之后，显示出
We are unable to process your order with the payment information you provided. To try again using a different payment method, please click on the link below.
下面有个链接是
Enter a different card or payment type.
在最上面有写
A Thank You screen with your confirmation number will be displayed after the successful submission of your payment. If you do not see the Thank You screen, your registration is not complete and you will need to contact GRE Services for assistance.

求问大家这咋办？