Yobit is a russian scam exchange i have lost money there too with trading , pump and dump and lock wallets scams etc...This is the worse exchange i ever encountered in my trading crypto history but my losses were small comparing to yours.I really feel sorry for your 10 btc ,man. You can try to contact Russian Federation embassy in your country and offer them reward if they can help recover your funds.Also Putin administration usually is active on criminals scams  if you go public on television and make them PR this way so they will look great in the eyes of western people.Write to Putin e-mail (it's not a joke) and give them information about your case with specifics and give them all the info about their past scams here from bticointalk. Contact some russian TV channels and talk about this on TV if they agree to make a show.I have heard people scammed with 100 btc not sending to wrong wallet but to the right one and never get their funds back but you should try everything.This is your best shot!