apple tv not on device list
I have a 3rd generation Apple TV (OS 8.4.4 up-to-date). I have been using it for years and all was well. However, now I have subscribed to Apple TV+ and recently tried to watch the new Tom Hanks WWII movie. When I clicked on PLAY, it alerted me to a new sign-in and asked me to enter the verification code, but where do I enter it? The TV is not listed in my devices on my Apple account. When I check the ATV settings, I can see that it is connected to my wireless and also shows iCloud and iTunes as active. I have two-factor ID turned on, and have read lots of articles, but cannot seem to figure this out. Thank you in advance.
Alspa52 in San Diego, CA