The VPN is good and I have been using it for a while. The extension is not something I can use since it is not supported in Linux. In general the support on Linux is a bit lacking. There are installers for the popular distros like Ubuntu, but not much more. And There is not installers for arm which I would love to use on my raspberry pi. I think it is a good product and I try to support the project, but I wish it was easier to use it through my multiple platforms.