YouTube- "This account cannot be used on AppleTV..." a fix might help you
Hi,
1) check your YOUTUBE username from your YOUTUBE account settings, write it down as it is.
2) make sure to get your 2-steps verefication password from your gmail security settings.
3) hit login in YOUTUBE from your apple tv.
4) type the username as you got it from step 1.
5) apple tv will only accept your username in its case sensetive form, so be sure that you type it as it is shown on your youtube settings page.
Enjoy!