GameGlass uses the ED Journal log in order to provide realtime game data. We automatically scan for and use the journal so long as it is in the default location and your username path matches the one reported to our software by Windows as the most recent installation's admin username.
The default location for the ED player journal is:
C: / Users / [username] / Saved Games / Frontier Development / Elite Dangerous
If you're not seeing any data sync when using our Shards (such as hardpoints or landing gear state, fuel level etc.) then you will need to manually select the location using the Change Log Path button.