In order to change the enable 2FA on your Epic Games Account, you will need to follow these steps:

1. Go to your account's "Account info" page.
2. Click the "Password and Security" tab.
3. Under the "Two-factor authentication" header, you will see all the available options.
4. Choose your preferred 2FA method and click "Set up" to enable it. After you select your authentication method, you should receive a code from Epic Games for email and SMS, and the App should generate a code for you.
   
5. Input the code.
6. A confirmation message will be sent to your email. Your account page will be automatically updated to confirm that the authentication method is active.