Hi FF friends :) After a long break with the merging of Zen+Cyberghost companies, I now [today] believe Zen free VPN is finally back + working on FF. It used to always say, "Zen is currently turned off". I just test installed it on: FF-115esr + Brave-1.57 and it's now functioning great. The clue that alerted me was the rave reviews at 'Free VPN ZenMate-Best VPN for Chrome' here https://chromewebstore.google.com/detail/free-vpn-zenmate-best-vpn/fdcgdnkidjaadafnichfpabhfomcebme/reviews ...So I thought - WTF?! I then removed the FF Zen addon from FF, closed FF, re-opend FF, then re-installed the Zen addon. And to my shock + delight...... It worked! [just like a dream...] I'm in aussieland if that counts ;) Good luck <3