Each account can only fill in one ID number, and it cannot be modified for the second time after filling in. If you want to modify it, you can try to contact customer service for advice on how to modify it. In general, you can't change your identity information. After the minor's identity is bound, the adult can apply for updating the identity information only once. You need to provide customer service with account number, regional service, role name, ID, new number registered by the same equipment, latest time and place, name to be modified and ID number, and then you can modify the information.
If you modify the bound mobile phone number, apply to Creator customer service to release the original bound mobile phone number, and then use the new mobile phone number for authentication, you can change the bound mobile phone number.