GMT-5, though I guess it actually is 28th at GMT+0.. Point was just that it still says "Return between the 28th and 30th September to claim your gift", so whoever is supposed to activate the deal hasn't done so yet (and since their office is in England they are probably still asleep)

It is working for me right now--I already downloaded my book free of charge.

Yep working here too. Except for the occasional 502 Bad Gateway that keeps popping up.