Crowdfunding is always risky business, not too different from investing in something that doesn’t exist yet. Some don’t deliver on time, others not at all. Some disappear like the wind, while others try to make a graceful exit, whether or not refunds are offered. popSLATE 2, a redux of an iPhone e-ink case, is somewhat all of the above. The company behind it has made one last update on Indiegogo, announcing its bankruptcy and dissolution and, to add insult to injury, the lack of funds to refund more than 12,000 backers who helped it raise $1.1 million last year.