I’ve installed the latest testnet 18 applications. I started the safebrowser and that works well. I created my account. everything is cool. Then I start the web hosting manager. It asks me in my browser to give permission. I give permission. Then nothing happens in the web hosting manager. All I have is the screen saying: “Waiting for Authorization”, etc.
The flavor of Linux is not as important as the desktop environment that you use, e.g. I think Gnome Shell on Arch should work fine. Could you please let me know which DE are you on?