Finally got it to work! Thanks “mamudesign”! Your reply put me on the right track to find the answer!
The doc file for those having the same issues can be found here:
This plugin is not the same as the old one. It is similar, but it works completely different than the previous Blender2MSFS. New steeper learning curve!
I just wish MS had included this doc file with the SDK. Would have save me some countless hours of hair pulling!