Apple TV

nic1225 Said:

"Apple TV: My tv is not allowing me to login to my iCloud. I have a gen 3 apple tv box. Its connected to the internet and I’ve tried two different accounts and it is still saying that it is ‘unavailable’ or something like that."

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On the Apple TV - Refresh the Session:

1. Remove: all Apple IDs from iCloud and iTunes
2. Unplug: for 30 Seconds
3. Power: it back on
4. Add: the correct Apple Account

Could it be that you run into issues with two-factor authentication? Do you receive a verification code on a different device (e.g. your phone)?

The procedure of entering the password and verification code together in the password field 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.