You can change your FCMT email on the Financial Peace website. To access FinancialPeace.com, you must complete the first two lessons of Financial Coach Master Training.
Once you've completed those lessons, go to your FCMT Dashboard page, scroll down to the orange banner, and you should see the icon to click that gives you access to your Financial Peace membership and claim your reward!
Once you've clicked that and activated your Financial Peace membership, you can click My Profile on the left side of your Financial Peace Dashboard page. Then, on the next screen, click Update your Ramsey Solutions profile and that will take you to the page where you can change your email.