Hi Peter,
Welcome.
I too restart MSFS a lot and never have that message. Do you have some batch file or similar starting both MSFS and Simlink?
Make sure you have the Start Simlink on system startup selected
Otherwise maybe try a complete reinstall :
-
Please use specifically Windows Programs and Features to uninstall Simlink:
-
If they exist delete directories
c:\Users\username\AppData\Roaming\Navigraph\Simlink and
c:\Program Files\Navigraph\Simlink. -
Then download and install latest Simlink .
Cheers
Ian