1. The card status is abnormal, such as degaussing the card, inactivating the card, too many password locks, and the card has expired. It is recommended that the landlord call his home service hotline to confirm.
Second, there is nothing wrong with the card. The signal of POS machine is not good. Failure to connect to the network will also lead to card swiping failure.
Thirdly, if the landlord holds an IC chip credit card, because UnionPay has closed the downgrade transaction function, if the cashier still operates the transaction by swiping the card instead of inserting the card, it will not be available.
Fourth, the credit card limit is not enough. If so, the landlord needs to pay back the money in the credit card before using it.