If this is true, then the exchange has behaved unprofessional. I believe such actions are announced to foreworn new investors and also give holders the time to take up a decision.

I have no information to that anyway.

Yea there should be an announcement. I looked it up (blog, twitter, fb, telegram) and there's nothing about delisting btca. But they truly did closed deposits (last is on 2018-07-05 23:54) and halted trading (See here: https://hitbtc.com/system-health). So I'm not sure what is going on however I do think it's not delisting - at least for now, but more of a maintenance or somewhere along the lines. Nevertheless they should let their users know the reason behind their actions and continuously update them, whether it's halting deposits/withdrawals/trading - particularly if it's been days or anything major.

You could ask their support about this and either wait for their reply or announcement on SNS.

Don't know if it is true since I don't use this exchange. But an exchange is responsible to make an announcement first before removing a coin from their list, for the users be able to withdraw those coins before it gets removed. This is also why I don't use this exchange, because there are lots of complaints and very poor customer support. But who cares about BTCA anyway? it doesn't have any demand and have a N/A volume in coinmarketcap. It is just right move for exchanges to remove it from their list since no one wants to trade it, but still hitbtc should have made an announcement before making any changes.

One known facet of crypto regulation is banks wanting the power and authority to create rules which govern how bitcoin and crypto currencies are managed. Another known facet is crypto regulators wanting to pick and choose which crypto currencies can be listed on exchanges and which cannot.

This might be a bit premature and there isn't necessarily hard evidence for it. But if altcoins and crypto are suddenly pulled from having support. What we could be seeing is regulation approving some crypto coins while banning others from exchanges. To make things worse, some exchanges could have gag orders (see: injunctions) filed against them which could cause them to end up in prison if they publicly discuss these matters.

Anyways if support for some coins is being denied suddenly without warning and there is no explanation for it. Regulation could be the cause. There was a news story published on this where it was said exchanges in mexico or japan (if I remember correctly) were being given 3 months to comply with regulatory guidelines determining which crypto coins they should approve and which should not be. Although I have to say I'm not remembering details on this 100% as well as I might.

It's been a long time since I've had Hitbtc deals because it has a lot of bad news and is no longer a good choice for investors. This case would make investors lose confidence in Hitbtc.

I know Hitbtc is a really bad exchange and lack of professionalism. An exchange includes the altcoin that is pumped and poured for several hours. And the solution is very poor. Not surprisingly, they remove a certain coin from the exchange without notice

I remember a case where a couple of exchanges have done this, where prior to them delisting coins they were dumped down significantly. In other words, someone knew more than the rest of the market.

Can anyone confirm or deny if that happened with HitBTC as well in recent times? Or even just before they did actually announce it? This ecosystem is one big mess without the much needed regulations.

All these allegations are enough reason to avoid these shitholes altogether, but nope, get rich quick noobs think otherwise.

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.

THIS IS NOT ONLY ON THE HITBTC DUE THE LOW AND LACK OF LIQUIDITY THIS ALWAYS HAPPENS THESE COINS Q NO ONE WANTS TYPE WALLET COINS YOU HAVE TO DOWNLOAD THE BLOCKCHAIN TO GUARD IMAGINA A COMMON PERSON HOW YOU WILL INSTALL AND KEEP A COPY OF THE BAT FILE.