Credit card (debit card) authentication of China Merchants Bank failed. Users can wait a few days before trying to swipe their credit cards (debit cards). If the credit card (debit card) can be swiped successfully in a few days, it can only show that the user swiped the credit card (debit card) before. A few days later, the credit card (debit card) still shows abnormality. At this time, it is necessary to consult the manual customer service to see if there is a problem with the card or the risk control.

As long as the user uses the card normally, there is no need to worry too much about abnormal display, because sometimes the POS machine fails and the network signal is poor, which may lead to the failure of swiping the card (debit card).