Credit card (debit card) may not be used according to the actual situation, and the specific analysis is as follows:

1. Equipment failure: you can restart the equipment, connect to the network, and then re-swipe the credit card (debit card) to pay.

2. Illegal card use: If the cardholder illegally withdraws cash in the process of using the card, once the bank risk control system is triggered, the card will be reduced and sealed.

3. Off-site consumption: When the credit card (debit card) suddenly appears off-site consumption, banks usually reduce the credit card limit or restrict transactions to protect the cardholder's credit card (debit card).

4. Credit card (credit card) limit: Credit cards (credit cards) have single and single-day limits, and when they are used up, they will have limits, so they cannot exceed the single-day/single-day consumption limit when spending.