To change your login email, you will need to do so from the Preferences page.
NOTE: You cannot change the email login for another user in your Method account. The user will need to login themselves and make the change.
1. Click the blue circle icon in the upper-right and then click User Profile.
2. Change the Signin Email to one you wish to use. You cannot use an email that is already associated with a Method Account. Doing so will result in an error.
3. Select Save at the bottom of the screen.
4. Sign out of your Method account.
You can now sign in with your new login email!