does the subject want to ask "the reason of abnormal card status"? The reasons include card damage, card freezing, etc.

1. The card is damaged, cancelled, degaussed, etc.: If the credit card has been cancelled, the card status will be abnormal when swiping, the card degaussed or the IC card chip is broken, and the abnormal status will also be displayed when swiping.

2. Card Freezing: If an individual's credit card is frozen by the bank or applies for loss reporting, the status will be abnormal when swiping the card.