Credit cards cannot be used according to the actual situation. The specific analysis is as follows:

1, equipment failure: you can restart the equipment, connect to the network, and then pay by credit card again.

2. Illegal card use: If the cardholder illegally cashes out during the card use, once the bank risk control system is triggered, the card will be reduced and sealed.

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

4. Credit card limit: Credit cards have one-day limit and one-day limit. If it is empty, it will be restricted, so you can't exceed the one-day/one-day limit when spending.