5.
As part of the SingNet email/OnePass account refresh exercise, if your current primary email is a SingNet email, or you don’t have an alternative email or mobile number linked to OnePass, you’ll need to add one.
For the time being, SingNet email is not supported as a primary or alternative email for login and verification.
Your mobile number will be used as your 2FA authentication to receive OTPs for future logins.