This is hardly the forum to ask for support of such an ancient version of X-plane, regardless of it being the only one you seem to be able to register with. I searched
www.x-plane.org for your F-86 and the earliest version supported is version 6.15. There are a couple of newer ones that support version 8.11 (latest X-Plane is version 8.40). If you register at x-plane.org you may find someone with an earlier version (if it even exists).