Ah yes, I see the problem in the log. Our aircraft's plugin isn't being loaded by X-Plane because the XGS Landing Speed plugin is installed.
The reason this occurs is because both plugins (our aircraft's and XGS's) use libacfutils (An aircraft plugin library) XGS is using an older version of the library, and it is loaded before our aircraft as a global plugin, so X-Plane decides not to load our version (since one is already loaded by XGS) but since it is an older version, it is not compatible. We are working on implementing a version of libacfutils that is linked statically with our plugin, so it is forced to load again, but that is still being worked on.
Until we can get a static version of libacfutils working with our plugin, I would recommend using a different landing speed plugin, there are many available that do not rely on libacfutils, here is one that I have used: https://forums.x-plane.org/index.php?/files/file/7995-landing-speed-plugin/