To log in to the Playary Apple TV app, follow these steps:

1. Open the Apple TV app on your Apple TV device.
2. On the welcome screen, click on the "Sign in with email" button.
3. On the login screen, enter the email address and password associated with your Playary account.
4. Click on the "Sign in" button.
5. If your email address and password are verified, you will be redirected to the main screen of the app.
6. If your email address or password does not match the information in Playary's systems, you will not be able to log in.

By following these steps, you can successfully log in to the Playary Apple TV app and access its main interface.