I have updated my email address/mobile number with Singpass. Why are my Singpass contact details not updated with CPF Board?
Updates to your Singpass mobile number and email address will not be automatically updated with the Board.
You can instantly update your mobile number and/or email address via the Account settings page with your Singpass. An SMS or email One-Time PIN (OTP) will be sent to your new mobile number or email address for verification before the changes can take effect.