No longer works with Fx Quantum... just receive blank pop-up. The only popup based addon for whatsapp that currently work are "Green Messenger" and Whatsapp Launcher.

It simply connects to the whatsapp website.
As easily you can acces it by opening the url in a webbrowser tab.
Makes no sense to install a plugin.

with bug, não funciona!

not working at all :(

Doesn't load the site at all, just stuck spinning. Nice idea though.

Not working with Firefox Quantum.

Still not working with Firefox Quantum. It's just blank when press on the icon.

v.0.2.0 is not working on firefox 57 x64. Not displaying anything