Hi…,
First check FAQ - Nav Data Out Of Date
Navigraph AIRAC data for X-Plane 12 works fine:
Check you have correct X-Plane 12 path in FMS Data Manager Settings page.
If still an issue in Addon Mappings page, select X-Plane 12 and Remove. Then press Scan.
In Addon List, select and Update X-Plane 12.
If still a problem check your …X-Plane 12\Custom Data\cycle_info.txt shows AIRAC 2209.
Cheers
Ian