If your card has a chip and is used at other bank ATMs or POS machines and this problem occurs, then it is not a problem with your card. According to the regulations of the Central Bank, various banks have begun to turn off the magnetic stripe transaction function. Bank of China has just completed the upgrade, and some other banks have not yet upgraded. If you use the card at a bank's ATM or POS machine that has not yet been upgraded, it will not work properly. I’m going to use a chip account to trade. I hope this can help you