It's certainly looking bad then. There is hardly any project that goes completely silent if it actually serious intentions about turning their roadmap into reality. Have they ever showed their faces?
Not only they are absolutely silent, from time to time one of them deletes any critical messages in the chat box at the exchange. They are just buying more time to hide themselves and the money. As for faces, they may be fakes, and the CEO remained completely unknown.
One question then is how well did they do their job in hiding their identity throughout the whole time they ran this project? And did they actually scam you guys?