Gnome shell extensions

How to make https://extensions.gnome.org/ website work with Waterfox? I've installed "Gnome Shell integration plugin" but it doesn't work, I get

"Although GNOME Shell integration extension is running, native host connector is not detected. Refer documentation for instructions about installing connector"

error message. I've installed connector successfully, everything works with other browsers. In documentation it's mentioned that Opera and Chrome in Debian are experiencing same error, and to solve it you have to copy json files from /etc/chromium/native-messaging-hosts to /etc/opt/chrome/native-messaging-hosts so i tried copying those config to /opt/waterfox/native-messaging-hosts (I've installed waterfox into /opt) but still get an error. Maybe someone using Gnome has faced same error and found a way to fix it?