Magzie, I can assure you it supports MSFS 2020. Here is a screen shot and the settings you can change. Make sure you use the latest SDK which I think has the latest version of SimConnect packaged with it. Otherwise you can install these files from this website for FSPassengers. The SimConnect package from FSPassengers works with MSFS 2020 and will not harm your installation. You can uninstall SimConnect in the conventional way using Windows. Initially SimShaker Module only worked with this older version of SimConnect and so we were advised to install the FSPassenger files. The SimShaker Module may have been updated now, it does get regular updates.
http://www.fspassengers.com/?action=simconnect
Here, look at the top in the box called ‘Simulation’, you will see MSFS and FSX.
If you have any problems, come back to me and I will try to help you.
Have a happy New Year and tons of flying!
Charles