Apple TV not accepting password.

If you have an Apple TV (2nd or 3rd generation) and two-factor authentication for your Apple ID, then you may be asked to type your password followed by the six-digit verification code directly into the password field. Additionally, there is a time limit, after which the code becomes invalid.

Try this: First enter the characters of your password (do not submit yet), then manually request a new verification code, then append that code to the password (no spaces or other separating characters), and then submit. That should help you get passed the time limit.

Hello Whatever129,

We understand you're looking to sign in to your Apple TV. You will need to sign in with the Apple ID associated with your library using these steps: Set up your Apple ID on Apple TV

If you're unable to receive a verification code you'll need to follow these steps: Get a verification code and sign in with two-factor authentication

Best regards.