I recently found out about a program called Fspy. to use it with blender it requires an add-on. I tried installing the addon and blender said modules installed successfully, but I couldn't find the add-on in the preferences. I tried manually installing the add-on (by unzipping it and putting it in this file destination: C:\Program Files\Blender Foundation\Blender\2.79\scripts\addons. I can see the folder in the destination but not n blender.
does anyone know how to fix this?