I have instaled the app and try to open a connection with the iPhone6. Do not do it. Nevertheless, I thought it might be my s configuration: Ge google in Internet and I have discovered the reason: 99% of it ligt Ruter. Because my Ruter a multimedia capable device (Belkin Wireless Play Router, model F7D4302 v1) I thought it should go: Ruter SW Update accessed & New Home Ruter + FireTV (villeicht unnecessary) = Success! Tested with iPhone6, iPhone 5 / 5S. Youtube works very stable, no crash regardless of whether video or music is sent. What's nice: you just have to launch the app once and configure. Then Run the app in the background even when FireTV restart. An open time, configure and then it goes. I am very satisfied. Simple!