How to install "superTool" manually

I can not use plugin manager to install this due to GFW, how to install it manually,pls?
I download the zip file, unzipped, and copied them to resp fold, but that does not work.

Put the plug-in in the Plugins folder and restart.

If the plugin does not load, place it outside the Plugins folder and double-click it. Glyphs will ask you if you want to install the plugin. Confirm and restart Glyphs for the plugin to be loaded.