Can't call for refueliing (not bush trip related)

GSX is not installed.
There’s nothing required to activate in drop down menu, weight & balance can be off or on.
Does gsx add an icon to the drop menu?

ATC request fuel is working.
Default KDAL, ramp 50 and ramp 38 with default Barron.

I made a keystroke for request fuel, but that did not work?
I’ve never use the keystroke for request fuel. Have to look into that further.