however, when this issue happens he says hello captain we are ready for pushback and just stand there. he does not move and the gear is not connected. There is no other action after making that first statement.
It's not a GSX issue. Some airplanes, and the FS Labs and the Leonardo Maddog, are able to control GSX themselves, and they disable some messages from GSX, to let this happening automatically so, you are probably missing a step in the airplane usage, so the airplane is expecting you to do something, and since the airplane has disabled the GSX messages, you can't tell what.
Sorry for not being more specific, but I'm not fully aware of the extent of the control over GSX these airplanes are able to exert, only that I'm sure they are able to suppress GSX messages and operates GSX menus automatically, to use it "hands free". So you might want to check with their support.