This addon requires the desktop app (windows application) which I can't install on my corporate laptop. Please provide a firefox plugin that works stand-alone (like the Chrome plugin for Linux machines).

Edit 2: Two years after the original complaint, this issue is still present!

Edit 1: Developer said they'd take a look, but a year later, it still does this.

Original review:

Still has the exact same issue I contacted support about at least a year ago: When you go to a blocked website, it redirects to the "green screen" without keeping the original website in the tab's history, so you can't even keep track of what website you tried to open so you can visit it later.