To change the phone number you use for SMS login, login via our portal and click the My Account link in the upper left.
You can also update and link any social accounts to use, as an additional way to log in.
To update your email address, click Manage Subscription on the My Account page
You can update your billing email address on the next page, here:
Note: this only updates the email address that your receipts go to.
To update the email address that you sign in with, sign in via portal and click Learn:
In the upper right, hover over your name and click My Account:
You can change your email address here: