It's difficult to judge the cause of the abnormality here, but it is estimated that it has a lot to do with your failure to return your credit card for a while. I suggest you call the customer service center of Bank of Communications Credit Card Center at 4008009888 as soon as possible, and transfer to manual service. Ask customer service to help you find out the specific reasons for the abnormal account, so as to get a more accurate answer.
Supplement to the question:
Repayment through ATM of other banks requires you to have a card of other banks before transferring money. Whether repayment can be made through ATMs of other banks depends on whether ATMs of other banks support inter-bank transfer function. If inter-bank transfer is supported, for example, if you have a CCB card, you can make inter-bank transfer at CCB's ATM.
The biggest problem now is not the problem of other banks, but the status of your bank card. If your bank card is frozen, you can't operate in other banks. You must thaw it first. So I suggest you call customer service first.