Found the problem - looks like a common issue. Since I'm always running X-Plane in full screen mode, I was not able to see the login prompt for license activation. I authenticated and it's working now! Thanks for the response @Cameron
I just installed the G5 on X-Plane 11 and it created a new Cessna 172 SP under Aircraft/X-Aviation, but the G5 screens won't turn on after clicking the power button
What gives?