Generally speaking, credit cards not only have a credit limit, but also have a consumption limit function. This means that when using a credit card to make purchases, there is a single consumption limit, not just how much credit limit you have. How much amount can be spent at one time?

If your credit card is limited and cannot be used, you need to contact the bank's customer service and ask the customer service why the credit card is limited.

If it is because of overdue debts, you need to pay off the debts in time; if the bank suspects you of cashing out, think about whether you have made any large purchases recently, and then explain it clearly to the bank.