Hello Stirgp,
You need to download the Zipfile from Dakfly to your Computer. I use the desktop normally.
Better, you register at Flightsim.to, because you can see later, if you have the latest version installed.
Install the required file from the Zip Folder into your community folder. For me, it was the FDEfx file only. See the notes in the Zip File, which one you need.
And the community folder can be found like this:
Good luck, Mate!