How can the person in charge of contract or operation be changed? November 25, 2020 05:55 Updated The submission of an application for change is required.Contact the Responsible officer. Related articles I want to change the contact person's information. The number of registered accounts has reached its upper limit. No more accounts can be registered. I would like to change the interval of changing password. What is the storage capacity in my contract? Can I know user's device type by the Device ID?