My Apple TV 4th gen updated to the latest IOS I assume it's 11. I didn't know this. When I turned on Voiceover I was in something called QuickNav. I can't get anywhere when I swipe it doesn't respond. What is Quicknav? How did I get in to it, and more importantly, how do I get out of it? Thanks, it's frustrating not to be able to use VoiceOver since this latest unexpected IOS update.