Can't use TDS all of a sudden (newb issues)

[Flightgamer]

I'm sure these are related but my issues are:

• TDS either blank or not showing up in sim
  
• After the standard TDS splash screen I now get a "Unable to communicate with navigator" error followed by a "Trainer Navigation Control" window which I can only close in task manager (supernav.exe).
  
• I have tried to reinstall as administrator but get a "TDSGTNservices.dll" error followed by a "installation successful" msg. Nothing improves.
  
• I now have a headache.
  

I have never had issues up until I think the latest upgrade attempt.
As a side note, I have to run the simulator using Steam's remote play. When the "Trainer Navigation Control" window pops up it fills the screen and takes all the focus requiring me to remote in separately to get around it or close it. Just an FYI.

Thx for any help.