IT WORKS!

Purchased the Pro version and very happy! You may have to wait a day or two for support, as it looks like there is only one developer. But it’s worth the wait as Marcin will personally attend to all your requests. That’s so hard to find these days.

As for the chat plugin, it has so many features that you’d be hard-pressed not to be able to do exactly what you want. It’s lightweight on a shared host and it works flawlessly with cache & cloudflare. What more could one ask for?