I use this extension since ~2018-19 in: Mozilla Firefox on Linux and Windows desktops (x86 && x64(amd64)) and Android devices (Firefox Android version also has extensions support); Chrome (Windows desktop); Opera/Opera extensions store-compatible browsers (Win && Lin x86/64); Waterfox.. Works like a charm all this times. Very appreciate its talanted developers!! My favorite extension for ad-block all this times. P.S. also perfectly blocks newer Youtube embedded ads algorithms since day one of they has been added!!:)