If you are still working on your application, navigate to the Application Questionnaire and select Alternative Contacts from the left. Enter the updates to the email you provided and select Save. You will need to ensure at least one of the contacts is a legal guardian.
If you’ve already submitted your application, you can ask your AR to unlock your application in Portal so you can make the update to your Alternative Contacts or ask your AR to update it for you. If you are making the update in Portal, you will need to re-sign and submit the application.