Recently I switched my first-generation Time Capsule settings to use a 2.4ghz radio signal rather than the 5ghz signal, which I had previously adopted due to wireless interference in my apartment. (The switch back to 2.4ghz is due to Kindle compatibility.) When I did this, I noticed that my iPhone no longer has Airplay support through my Apple TV, which is connected by wire to my Time Capsule. What might have happened? Thank you.