This is a tough one.
There is some talk on the internet about this whole company being a scam. I don't believe that it is necessarily, but companies who are into this sort of stuff are usually R&D companies that rely on investers continually coming on until they actually have something they can bring to market effectively.
My guess is, they're out of money for the time being. Don't be surprised if the employees aren't getting their paycheques either.