You can change your registered phone number by following these steps:
Open the menu sidebar and click Profile
At the Sign In & Security section, click “Change” on Phone Number
Enter your PIN
Input your new phone number
Please ensure your new phone number is active and valid in order to receive OTP code verification
Click Verify by OTP
Enter OTP code sent to you by SMS
Click Verify
A message at the bottom will confirm “Change Phone Number Success”