Hi Silvano,
Happy New Year.
Using Guide to posting Screenshots
Please post screenshot of your Settings tab showing FSX, Prepard3Dv5 and X-Plane paths:
Please post screenshot of your Addon Mappings tab showing and FSX and Prepard3Dv5 addons, and X-Plane 11:
Please post screenshot of your Addon List tab showing all items:
Please advise the problem you have ?
Cheers
Ian