Its fine when it works, but it really enjoys logging you out. Recently it wouldn't let me log back in so I tried re-installing the add on but now its icon doesn't appear in the extensions bar (not even the drop down menu for overflowing extensions) so I can't log in or anything.

It does however appear in the add-on manager but you can't actually use the extension from there.

I would just use the full PC app, but it had a habbit of giving me BSODs when in use, especially when playing glames, even if I had them blacklisted from using the VPN.