Look in your community folder.
The folder for the mod should read A32NX.
If that folder is inside another folder for the mod, that is the problem.
If that doesn’t help, use this installer.
https://github.com/Externoak/A32NX-installer/releases/latest/download/A32NX_Downloader.zip
I would not use the stable version, use the developer.
This installer will check for updates.
Use it everytime you plan to fly the 320 before you start the sim.
Let us know how you make out!