When I try to log into iTunes to get Apple TV on my Apple TV 3rd Gen device, my Apple ID does not work. I get a message on my phone to enter the verification code but nothing comes up on the Apple TV. What do I need to do?

The adjusted procedure asks to enter the password and verification code together in the password field. That can be confusing. 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.