You can't even get that far. Just go in and try it. No matter what you do, your cart will remain empty, thus you can't go any further than that. No matter how hard you try, you are in an endless loop of an empty shopping cart. This happened soon after the Ocotber 31, 2018 t-shirt deadline past. I do not know if you already have a reservation and can upgrade. Only someone that has one of those could see how far they could go. I suspect, that it will not be far. Looks like Elio is keeping the ordering site up and ready to go when they get funding, they can turn it back on quickly. As of now it's a placeholder.