During the multiple installations I saw various components work (Couatl you control for example) but never was I able to see the menu for gsx and when I tried to force it by using the drop down under addons/GSX
So, your only issue is GSX doesn't respond to the KEY, but works from the menu ? If yes, the most likely case is you have another add-on that is using the same key. No two add-on can share the same key so, when you have a conflict, you must configure either of the add-ons that are trying to use the same key to change its default. GSX obviously allows you to do that, from the Couatl -> Key Mapping menu. You must give it a key that is not used by anything else.
I only get a sound much like an error message sound, like “Boing!” Someone else in another thread reported this boing sound so I’m not alone.
That's an entirely different thing and, again, it clearly shows GSX is working, and it's trying to tell you something. The Boing indicates some kind of problem, like trying to use GSX when engines are running and the parking brake is not set, or any other error and is NORMALLY coming together with a RED text on the top text bar, the standard Simconnect text area that every add-on uses for messages.
Do you have some kind of problem with it ? Have you disable the Information text in the simulator options ? If you have, no add-on will be able to print messages, so you'll be left with only the error sound which, I'm sure, once you realize why your text bar is not showing, it will give you some meaningful error about what GSX was trying to tell you.
Without sounding boastful, I will say I’ve been using computers and flight swimming for over thirty years. Following installation instructions is not difficult but when I follow yours the install does not occur correctly so I need some help else I’ll just shelve your software and not user again (gsx/gsx2 bundle)
Nothing in this latest report of yours even indicates GSX has a problem.