Firstly select X-Plane 11 from the dashboard, with that checked, Head to settings and look for a new "X-Plane" tab will appear at the top of the page, switch to that. Now we need to tell SimToolkitPro where X-Plane 11 is installed. It will try to auto detect the installation folder, but this isn't always possible or successful.
If SimToolkitPro was unable to find your folder, click the "Find" button to locate the directory. This is the location of the X-Plane.exe file. With the folder selected, Click the install plugin button copy over the required files. In the event of an error, the notices will appear in the top right of the app. Errors are likely to be permissions based, so check the simulator is not running and you have the required rights to place the plugins in the folder. You may need to run SimToolkitPro as administrator to do this.
For a local installation you are now done. Starting up X-Plane 11 and loading into an airport, you should now see STKP-Connector in the list of installed plugins using the plugin admin menu.
If the plugin isn't present in the list, check your X-Plane Log.txt file for more information on why it isn't being loaded or hop into the Discord to get help from the Support Team.
With the plugin loaded, you should now be able to establish a connection between the sim and SimToolkitPro. The latest versions of SimToolkitPro will automatically connect to the simulator if it is detected running, if your simulator is not detected, click the Connect X-Plane button on the dashboard or the flight summary page.
Visting the Sim Status in the bottom left should now show information about the aircraft you are currently in as well as positional information from the simulator.
With that, you are ready to fly!
Network setup is slightly different, but also nice and simple too. SimToolkitPro for X-Plane 11 over a network can function with any combination of devices and OSs. Sim on Windows, STKP on Linux, Sim on Mac, STKP on Windows, all should work just fine.
The first step is to ensure the plugin is installed in X-Plane, this can be done by either installing and configuring STKP as above locally first, or by viewing the plugin files from the X-Plane setup page in settings an manually transferring it over to the simulator.
With the plugin installed the only setup required is to ensure the IP is correct for the simulator device, importantly make sure the port 51303 is open on the simulator device in your firewall as required. Please consult the appropriate documentation for this!