Q: NFL is unavailable. Please try again later. (I have a 2nd Gen. Apple TV.) Every other sports app is fine. WTH?!

Maybe you need to check with NFL? Note that, if they've changed the URL, the channel may no longer work, since ATV 2 hasn't been updated for a while.

yEs, I have this same problem, seemed to start the begiinning of August.  Did full restore, contacted NFL tech and even brought it into Apple.  No results.  I think Apple really does this to make you upgrade.

Same problem here also. Have just raised a request with NFL, but I assume it's actually an Apple issue. I'll also raise a case with Apple.

NFL tech not helpful at all, had me check routers and do a full restore.  problem still there.  please let me know if you find a solution, however, I believe the issue is really around the NFL update is no longer compatible with the older Apple TVs.