Yobit seems doesn't care about this coin. They have their payment and that's all. No guarantee.
There is a chance they made confusion with an old coin with similar name (Powerstake ticker: POWER -
PowerCoin ticker: PWR). Payment is made through Yobicode (sort of redeem code), and it's not taken until coin is added. We suggested PowerCoin also to Bleutrade (
http://bleutrade.com/)