Add-on works well once you are connected, but if for some reason you want to disconnect. (As I often do for development purposes where I have to connect to something in the local network or on the localhost, which for some reason it also redirects). You'll find yourself logged out of the add-on and you will have to log in again to be able to disconnect from the vpn server. If they fix that issue this add-on would be significantly better. In addition to that they could add features that are in the desktop application on Mac, that aren't in this add-on. (like the ability to select a server).