Above anything, raising money through ICO instead of via VCs really put a question mark, IMHO, on the founders' ability to convince, which to me is the key quality of a good founder.
While I do not have any insider information, it seems to me that the company treated manufacturer just like that, a manufacturer. Usually if a company chooses an EMS partner properly and has honest and frank collaboration, this kind of surprise won't happen, let alone switching manufacturers.
Another problem would be: should the underwriters, led by Goldman Sachs and Morgan Stanley, be responsible for this? If they had seen a sharp divide between private equity investors ($15) and public traders ($10) during book-building, they should have advised the founders to lower the subscription price to below $10 even though the PE people have put in enough subscription at $15 to complete IPO.