1. It is on their website that Yobit does not work correctly (https://www.scash.ml/) , SCS is also not the only coin affected, many are
2. Devs transfer you all your coin manually if you mail / telegram them to "admin@scash.ml". I had 21 from a testbuy there and they helped me transfer them to my wallet
3. price on yobit is like 0,10 cent higher atm then other exchanges, so not true, just a normal slight difference