This is a great app that stopped working a few days ago because of mozilla screwing all it's users. Internet is hell without it. I've already been stuck for a year on firefox 56 because I am dependent on a "LEGACY" multirow bookmark addon that mozilla doesn't have an equivalent for after 57 (which is a crazy functionality for any browser NOT to have by default). Now getting uBlock error "Download failed. Please check your connection" . Stop messing with our addons you yahoos!!!