I read all the messages here and I think you should not despair. YoBit can really return ETH, but you have to understand that it’s not so easy and they will do it as a sign of goodwill. You must remind them of this, and if they refuse, you can create an accusation in this section of the forum: https://bitcointalk.org/index.php?board=83.0 By the way, offering them a reward is a really good idea.