The stop-gap they've been using to get by the wallet problems on the likes of Hitbtc and Cryptopia is to get Smartcash listed on piddly little exchanges with such low volumes that you can't trade Smartcash.
We had contacted Biance, Kucoin, Bittrex, Poloniex but they did not response. As personal i think it related to Volume of SmartCash in trading are still small, we need improved it in exist exchange to prove it so have change in other Big exchange
Also i think there are a lot of coins with lower daily volume (at least after the pump happened) but listed on the top exchanges.
Be careful with yobit. They have killed more than one coin...! It's almost not possible to have them to update a source code