Gnome Extension is a alternative tool for install gnome shell extension in GTK 30+ or when you have an error like this :
Although the GNOME Shell integration extension is active, the native host connector is not recognized.
Please consult the connector installation manual.
~$ cd Gnome\ Extension
~$ ./gnomeShell.sh [link to the gnome shell extension zip file]
Download extension zip file at https://extensions.gnome.org