Guys it looks like a scam, first they annouce a random exchange named "Nexchange".
I tried to investigate about Nexchange. The CEO is from Israel, I just screened the photo of the CEO and the fact that he is from Israel and I posted the screenshot into the telegram group, 30 sec after I was banned. WTF is that ? 
Why I was not able to say that he is from Israel ?
I'm done I'm gonna sell 50k BDG.