Sometimes it shows the ini file being used in the top left of the GSX window. This one doesn’t. Just the name of the AFCAD along the top of the window.
That's precisely what I suspected: GSX hasn't loaded the .INI for some reason.
The most common reason is the name of the AFCAD .BGL has changed, so it doesn't match the name of the AFCAD in the [General] section of the .INI file. Note that, only the FILENAME matters, even if the file has a different path ( it almost always does, and it's normal ), it won't be checked for matching, just the filename.
Or, there's a syntax error in the .INI file, which I cannot possibly check with just a screenshot of a section.