What path did you select? And how do you start ED:H – from Steam, from a “steam shortcut” or from a shortcut to the launcher executable, or…? For me, ED:H does not register input from my Sentry/EyeX at all (the product works in Windows using the gaze tracker) and I am wondering if I have somehow selected the wrong directory.
You need to point to the game executable so for the Steam version it should be:
[YourSteamInstallLocation]\SteamApps\common\Elite Dangerous\Products\elite-dangerous-64\EliteDangerous64.exe