Ad-blockers are great software provided by browsers that stop us getting spammed with ads when we go to websites.
Blended Teaching uses the same "ad" technology to help integrate with universities, and track your learning progress, performance and time spent. This is the data needed to help improve your learning experience, and for your professor and university to support you. Some classes even award points based on time spent, or progress achieved.
Switching off ad-blockers in your browser for Blended Teaching helps your learning experience. But don't worry, when you switch it off for Blended Teaching, the technology is still working to block ads on other websites.