Hi, unfortunately Mozilla has only been allowing "Recommended Extensions" on Firefox for Android since Jan 2021. However, you can install Unhook on Firefox for Android Nightly following this tutorial (https://blog.mozilla.org/addons/2020/09/29/expanded-extension-support-in-firefox-for-android-nightly/). Or, you can just download Kiwi browser from the Play Store and install Unhook from there.