First, there is no way to tell who they are, cause they have kept every information about themselves secret, not even their location or who they are, so why would I trust such people?
You don't need to trust them because they will never tell who they are because they are scammer. You can trust to a lot of people on this forum who has scammed by yobit, it is simple. You have to know there are a lot of thread which stated the yobit is scam and they have stolen moneu from its user. I'll show you some threads about them, 1. YOBIT exchange scamming peoples in EGOLD ICO and steal a lot of investors BTC's