Has FB changed its policies on watching ads

I run Chrome on a Mac Book where I watch programs that I've purchased from FB through the Website. I have used adblock to keep ads from interrupting the workout. Today, I could not launch any videos on the website. When I turned the adblock off, the videos would launch within the FB website. I'm wondering if Fitness Blender is requiring everyone to watch ads during the workout, even workout programs that were purchased.