The credit card is invalid due to the following circumstances: the credit card has expired, the credit card has been canceled, the credit card has been deactivated by the bank, the credit card is damaged, the credit card cannot be used in the country (such as VISA, MASTER, JCB single label card, Can only be used overseas). If the above situations are eliminated, you can call the customer service hotline to find out the reason why it cannot be used.