(Make a Lottery/Queue System) And you're not thinking about just how many people would be in that lottery...
For the most part, all of us were on equal footing tonight. All of us were frantically trying to F5 our way to the "Submit Order" screen. And you were only competing with those that were actually online and trying to get the order. If there was a lottery/queue, then just think about how many people would just be adding themselves to the list. Now you're competing against 5,000 or 10,000... They already limited it to 2 per customer, which created a better chance than any of us has ever had trying to catch an order through Canaan.io directly.
^This, the lottery system would probably give us even less of a chance.
And I agree, 1 per customer might be too much of a limit.
Edit: One suggestion I might make is that Blokforge streamline the checkout process for people who have signed up for an account. Not sure if it was a glitch because of the traffic, but I had to re-enter my billing address during checkout which slowed me down a bit.