Hi,
Please reinstall the Simlink plugins for X-Plane 11 and check if the issue persists.
If you are still experiencing problems, kindly follow the steps outlined in this link to clean up the Simlink configuration.
After completing the cleanup, log in to the Simlink application and reinstall the Simlink plugins for X-Plane 11.
Please let us know if you continue to face any issues.
Thank you.
Best regards,
Vishal Ahir
Navigraph