Why do I get a black screen when casting with InstaShare 2?

What causes a black screen when casting using InstaShare 2?

If you are casting video streaming apps like YouTube, Amazon Prime, Netflix, or Disney+, the source content is encrypted and you can only cast it by using AirPlay, Miracast, or Chromecast from a desktop or laptop.

→ For Chromecast, please select Cast the entire screen when casting.