What does it mean that the debit card medium is not in normal condition?

In fact, it is the risk control of banks. If the bank needs to close the user's card or reduce the user's credit card limit, it will generally send a text message to remind the user that the credit card status is abnormal. When the transaction of the user's credit card is risky, the bank may think that the card has been stolen, so an exception will be displayed to remind the user when swiping the card.

What's the difference between debit card and savings card?

In fact, there is no difference. Savings cards can also be called debit cards. The difference is that debit cards belong to a large category, including savings cards, special cards and stored-value cards.