* I got an error message from Netflix when I'm mirroring my Mac to the TV, saying "Please ensure your monitor is HDCP compliant and is mirrored using Airplay"?
You might get an error message from Netflix when you play a movie on Netflix and screen mirroring it to your TV. The error message might look like this:
"Whoops, something went wrong...
There appears to be a display problem. Please ensure your monitor is HDCP compliant and is not mirrored using Airplay."
This problem would appear only when you use Safari browser. So when this problem happens, you can use the Chrome or Firefox, and everything would play smoothly.