At b2x-segwit.io they tell you that B2X is traded at HITbtc.
Thats false.
HITbtc is trading another chain, this is close to SCAM. Right now, they have a not working wallet, which stops syncing at the date of the fork and only one loser exchange.
I tried to chat with them but no serios answer they just closed the chat window after I asked they how about the HITbtc situation ...
Can not recommend this fork, looks like jet another wannabe bitcoin fork to me.
The wallet works fine for me and has since the day they released the source on GitHub.
Have you tried downloading the latest version from here:
https://github.com/SegwitB2X/bitcoin2x/releases and/or following the advice repeated many times in this thread for resolving the sync problem?