I am not with Laminar Research; just a flight simmer.
This forum is for those flight simmers having problems with X-Plane and not for problems with third party software.
If the aircraft you acquired is part of the official X-Plane software package then you will have to live with the problem as any refund would be a refund on the X-plane software.
If the aircraft you acquired is from another third party then you will need to contact the seller of the add-on aircraft. This also applies to X-Plane.org as they have no commercial connection with Laminar Research.