You can change your login email, password, and billing information in the account settings.
Login to your Online Dashboard
Click "Account" in the left side menu. This will take you to the "Account" page
To change your login email, replace the current email address and click "
To change your password, type in the current password, fill in the new password and verify it. Once you finish, click "Save password"
Fill in the contact details and relevant billing info. To save your new details , click the "Save contact info" button at the bottom of the page