The first thing you need to make sure is that you have AudioWind plugin’s license from LeSound . The plugin provided with FMOD Studio is for trial purposes.
The second, in the FMOD Unity settings, look for the plugin section and add the name of the plugin minus the extension (in this case it would be “audiogaming_audiowind”) and ensure the plugin’s dll is in the appropriate plugins folder. For more information, check out the documentation:
https://fmod.com/resources/documentation-api?page=content/generated/engine_new_unity/settings.html#/