Login - if you already have a Zattoo account:
Login with Amazon - Login with Amazon is possible, if your Zattoo account was registered via your Amazon account on Fire TV.
Email/Password: Enter your email and your password and click Login.
If you have forgotten your password, click Forgot password.
Sign Up - if you are new at Zattoo:
If you haven't created a Zattoo account yet, go to Login with Amazon or create your account here and log into the Zattoo app on Fire TV.