First, ICQ was banned in Ukraine.
Try setting up Google DNS; it should help.
New here? I'm Roha — want a quick tour?
First, ICQ was banned in Ukraine.
I'm giving Skype a thumbs down — it's ICQ #2. After Microsoft took over, you could already forget about Skype.
completely unused AIM, MSN, and Yahoo
I've been using Slack for about two years. The downside is that in the free version, you can't view the entire chat history; you have to pay, which isn't really an option for many people.

If specific requirements are formed regarding what this communicator should be able to do, then a minimalistic version for HW could be made so that it only does what is necessary and nothing extra; this would even be the best option, as players wouldn't need to register anywhere else.
So, I am waiting for a list of specific requirements to more accurately assess this prospect.
I agree regarding Slack; moreover, in this case, we might not even need to create anything—one was recently created and is already being used by a limited circle, including Dirty_Player.
I'll add as well: ICQ hasn't worked for a month. Something is wrong with the password or whatever, I didn't bother figuring it out. I don't even remember my last password since that was about 15 years ago.
I vote for Discord. It's convenient to create groups, etc. The HotA community is already there.
Hello everyone. Dropped in to see what HW is up to. It's 2019, and people have dared to touch the sacred—changing ICQ as the default messenger [by the way, what even is that?)].
Why are you stressing yourself out? Relax, you need to distribute your energy and not waste it in vain.
I'm against Skype—it's ICQ#2. After Microsoft took over, you could forget about Skype immediately.
Most gaming communities use Discord; moving there could incidentally serve as an additional influx of players.