Not surprising, you can be happy about the fact that you can still withdraw the currencies that they removed from trading, when it comes to HitBTC you can never be so sure.

They don't even have a support, so you can't even complain to anyone, presonally I would stay away from exchanges that you cant know who owns it, because they can just run away at one moment and nobody will know who was the owners, it's much more easier to make a theft in such a situation and we should take double caution when it comes to the cryptocurrency market.
I can recommend you to use Bitfinex, it might require you to reveal your identity but they are much more regulated which makes me less concerned about it.