I got my order in, and I received the automated confirmation after I made payment by PayPal, so I "think" that all my ducks are in a row. However, there were problems with some orders, and as jackell stated, they were almost certainly related to the server load.
Additionally, some people were charged no shipping, while others were charged shipping (but less than expected, and to the best of my knowledge, only if they also ordered accessories like shirts, hats and sheaths); it wouldn't surprise me if the knives were configured to have no shipping cost (like the challenge coin) by mistake. Of course, that's just a guess on my part.
After Dog Fathers sold out, Patti posted that there were problems, and that she'd have to figure out what happened and send follow-up emails about shipping price adjustments (see
Dog Fathers). Until then, it's just a waiting game.