hello

hello I can't see the AirPlay icon on my Macbook and My iPhone 6 plus too . The icon suddenly disappeared. I tried all the troubleshooting I could find, nothing worked. I reset the router and also the computer and Apple TV unit all at the same time. At first I still could not see the AirPlay icon, I had to turn AirPlay back on in Apple TV. The setting seemed to set itself to OFF when I rebooted it. help me fix it please , Thank You