I’m trying to sign in with my home phone number. Why am I getting an error message?

For security purposes, our sign-in process requires an email address or a mobile phone that can be used to validate your identity. A landline cannot be designated as a validated sign-in credential. Sign in with your unique email address to access the Edit Profile service. Edit the Primary Phone number entered with a mobile phone number then complete the validation process. Once validated, you’ll be able to sign in using your mobile phone or your email address in the future.