Credit card repayment shows that repayment failed. Why?

1. The banking system to which the credit card belongs is out of order, resulting in the failure of repayment. There is no need to worry about this situation. If the repayment fails, no deduction will be made. If it is overdue, you can explain it to the bank.

2. Network delay will also cause credit card repayment failure.

3. The balance in the debit card or savings card used for credit card repayment is not enough to support the repayment of the current credit card bill.