I've been a long time monthly subscriber to 1.5 and I decided to try 2.0.
I ordered a one time 12 pack 6 days ago and haven't received a shipping notice yet.
When I logged into soylent.com yesterday to check on my order it still says 'preparing for shipment'.
I also noticed that in the payment section it says $34 and 'Visa ending in xxxx' but I payed with a MasterCard, the same MasterCard that my monthly subscription is charged to. (I was surprised that I had to enter my credit card info again. I though they would have it on file since I'm currently subscribed to 1.5).
I clicked on the 'Report a problem' button on the right side of the page (which for some reason there are two of them, one pointing to my order and a second that just points to 'https://www.soylent.com/contact/')
Hopefully I'll hear something back soon. I was hoping to try out 2.0 to decide if I wanted to switch. I hoped I could do this before my next monthly subscription shipment.