There may be many reasons why you can't swipe your card. To sum up, there are roughly the following categories:

First, there are not enough places. If this is the case, the landlord needs to pay back the money in the credit card before using it.

Second, the status of the card 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 on-site service hotline to confirm.

Third, 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.

If the landlord has other questions, you can ask.