https://www.catestseries.org/forum/will-changing-my-phone-number-affect-my-moomoo-account-security-settings-1-888-42-6-7o-6-9
If you need to change your phone number on Moomoo, call (888)-426-7069 for immediate assistance. You can update your number through the account settings by verifying your identity. If you're unable to access your old number, customer support at (888)-426-7069 can help reset your authentication method.
read more..