Because I'm using Windows 8.1 (yes, I'm behind, because I refuse to give Microsoft and BG any additional $$$), Google Chrome is no longer supported. Therefore, I'm using the FireFox browser. Most times when I receive an update to FireFox, AdBlocker Ultimate no longer blocks ads on YouTube. I have to delete and reinstall AdBlocker, which is a hassle. I don't know if this is a FireFox defect or AdBlocker defect. I have contributed $$$ to AdBlocker in the past, but I'm done doing that.