I already entered my e-mail and telephone number when I first logged on. Why are you asking me for it again on the "Secure Delivery" menu?
The Secure Delivery information is used to send you temporary Secure Access Code. These are used whenever you use our "Forgot Password" function, or when you register your computer for MFA. Up to three e-mail addresses and 3 phone numbers can be entered. When you need to reset your password or register your computer, you can choose one of these phone numbers or e-mail addresses to receive your Secure Access Code.