I do not understand why sales are so slow. A good team of developers, a functioning exchange, what else do investors need? Maybe just not enough advertising?
We started late, and we didn't build a community before we started. Lesson learned, but it is ticking every day. Many contributors which are good for the platform, but a low average. We are not worried, and will continue full focus on building the platform strong. We might have to call back a few institutional investors that we put on hold though :-)
Yes, usually collect funds, and then start the platform. You did the complete opposite. Not everyone wants to invest in the finished product, but I'm sure you will succeed. Good luck!