Hi dev,
I installed GSX pro on my new device and found the problem: When started a flight, whether or not start GSX in the menu, the couatl stays in system tray for seconds and it then disappears, and it will reappear in system tray after another seconds and disappears again. If I open GSX menu it just says waiting for couatl to start, and for some time the menu will disappear like the couatl in the system tray. I have installed GSX pro before on my old device and it just worked fine.
By searching for some solution on the internet, I have deleted the couatl and couatl64 folders and reinstall them by opening FSDT Live Update and it's not worked. I have even tried uninstall GSX pro and deleted Addon Manager folder and try reinstall, and the problem still appear. I have checked my antivirus and the Addon Manager is in exclusions.