Must be where your computer, IP and what not is doing the transaction from. Canada was never a problem for DV, but now they won't let my transaction through either, even though they have all my details. Seems it has gotten worse.
Please send him an email HW. This is getting ridiculous. Does he want global customers or not? If not then make it clear so we don't waste our time. I know he has been aware of the problem for a long time now and he has done nothing to update his system. Really poor form in my opinion.