Working fine here and I'm in the UK on Three mobile broadband, tapped refresh a few times all good, though waited few minutes and on the 5th refresh load check I got the sorry try later page.

Reminds me of my old telco day as between 3-5pm (GMT) USA lines were at there busiest as that is when they wake up and with that I suspect the same is true today in many ways still.

But is certainly not a case of any region limitations from what I can see and is just a busy site waking up to the morning local rush of freeness. The old /. effect.