Your post is not very clear but, if I understood correctly, SODE is telling you have FSX only, but pointing to the P3D folder ? That seems to indicate you use ( or used in the past ), the extremely dangerous P3D Migration tool, which will destroy your P3D installation by hacking the registry and make it appear as an FSX installation, to force installers not compatible with P3D to go there.
This of course will totally confuse PROPER products, like GSX and SODE, which support P3D and FSX properly, and must recognize them as they are.
If you are still using this utility, just stop, because it does more damage than a virus, and if it offers an option to Undo all the damage it did, use it. If not, or you used it in the past and you have already removed, I'm afraid you don't have many other options than to UNINSTALL P3D and REINSTALL IT AGAIN.
If you don't do that, you are going to have endless of issues from all products, especially the native P3D ones.