The problem is in ORBX LEBB. I get no movement to AI traffic automatic and request function in FMC is not working.
Is this scenery coming with its own SODE jetways, or another kind of jetways, not made with GSX ?
I'm asking because, looking at your question, it seems you are asking why 3rd party jetways in a 3rd party scenery don't work when called by the airplane FMC. Not really a GSX question...
Normally, if a 3rd party scenery comes with its own SODE jetways, GSX will know about them, and can activate them from its own menu, and if the relevant option in SODE is enabled for AI, they will work with AI too. This is supposed to work regardless of GSX being used or not.
So, if that scenery comes with SODE jetways, and you haven't replaced them with GSX own, if they don't work from the airplane FMC or with AI, is entirely unrelated to GSX.