Apple tv3

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.

You will need an Apple ID account. Without an Apple device, you will need Windows PC with iCloud for Windows 5 and iTunes 12.3.3 or later.

Two-factor authentication requires a “trusted device” on which the receive the verification codes.

Two-factor authentication is supposed to be able to be turned off only within the first two weeks of enrollment.

Two-factor authentication for Apple ID - Apple Support

Impressive speedy entry. I hope you won’t have to do that often.