Sorry, I don't know, the only thing I can think of, is to highlight the obvious points I know :
Name, billing address and paypal account info should be filled in.
And not 100% sure, but I don't think business user is a requirement.
But that nothing happens when you press the button is probably not normal..
No feedback ? No page refresh ? Do you use any refresh blockers ?
I guess shapeways will respond around next monday.
Best to also post your OS and browser versions just in case.
Last edited: Feb 27, 2010