A: You can click the [Change Phone Number] or [Change Email] button on the "Security Center" page, and then complete the verification process as prompted to change it.
The system will confirm your identity through the original binding method or two-step verification method to ensure the safety of the operation.
Once the modification is successful, the new contact information will take effect immediately.
Help Center / Account / Account Security / How to modify the bound mobile phone number or email address? 
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