Call the credit card customer service. You tell him to activate the credit card, and the customer service will tell you how to operate it. It doesn't matter if the chip is broken. You only need your card number and ID number to activate it. If you want to change your card, you can also call the credit card customer service and tell him that the credit card is damaged. If you want to change your card, they will register your information and reissue it for you. It won't be too much trouble.