Why don't use MEXC or Bitbns service itself to trade your BNS token? I see that if it's still available on kucoin (maybe)
Kucoin still listed this coin but it's lack of liquidity and the price is pretty high among other exchanges
https://www.kucoin.com/trade/BNS-USDTMEXC is also a shit exchange too, many shitcoins always listed on that's exchanges, similar like Hotbit. The another thing is, they're charging ridiculous fee and not profitable at all. I guess Bitbns exchange is more unknown than probit, that's the reason why the @OP didn't use it.