AirPlay from YouTube iOS app doesn’t work

I would like to start video from my iOS device (iPad 4, iOS 8.4), YouTube app; the video should be displayed on Kodi 15 (OpenElec, Raspberry Pi 3).
It doesn’t work – the player on iPad shows like AirPlay does’t something, but it is not displayed on the TV.

The AirPlay works well with standard Photo app – both photos and videos are displayed (and played) correctly.

Here is the log – http://pastebin.com/unNP1Ua4

What could be wrong here? Is there any other way to play youtube video from iOS on Kodi-device?