I was longer time not on HitBTC!
but the lasttime there was in the news that they add B2X to the exchange, but this was the News for the Original Hardfork that was chanceled
a lot posts back, someone wrote to the support and get as answer that they not support this fork!
Maybe it change, but i don´t think so

The only Exchange i know 100% sure is working is exrates.
Negocies Coins looks working, too, but have not checked it.

But what future has a coin, when dev´s not care about the community?