Hello @nepos9586 ,
welcome to the MSFS Forum.
I can not tell you what your issue exactly is, but otherwise try the following reinstall procedure:
Close MSFS, remove the Aircraft from your community folder via the installer, start msfs and check if the FBW installed entry is gone.
If that is the case, close MSFS, download the newest installer from the FBW website, use the installer to install the FBW development version and verify if the previously empty community folder now contains the fbw folder. Restart MSFS and the FBW aircraft should show up.