I do not seem to be able to get the Rocket Chat running. Correctly. Some can help me to find a step by step instructions, please? with my 60+yrs I seem to be lost here a little.
I installed it on my site at xsimracing com / XSIM/ but this Rocket Chat does not work.

I don't like RocketChat; it works and then you do an upgrade and it won't bring in the avatars.  What is needed is a native chat application but no one seems to be interested in writing one.  It just needs to be a simple chat; maybe with webRTC audio/video chat, but applications like RocketChat are overkilled.