Jeeeez. This kind of comment wording is assuming the devs did not ask them to update the wallet. This also intrinsically points to the assumption that the devs have godly power over 3rd parties such as exchanges, etc.
So, what if the devs did repeatedly ask HitBTC (and MinerGate for that matter) to update to the new blockchain and HitBTC/MG chose to ignore the request for whatever reason? Did that cross your mind?

So, people, please stop asking devs to fix issues that are are not theirs to fix and rather go to where the issue really lies. Have problems with HitBTC? SO GO THERE.
Water is wet you know? 

Disclosure: I also lost some XDN with MinerGate due to them being on the old blockchain when I sent the funds to a wallet that was already on the new.