This accessory is not supported.

This accessory is not supported error message every time I use this app with airplay.
I do not own Apple Pencil and Apple iPad Pro Keyboard.
I do not connect with any Bluetooth devices . Bluetooth and wifi is on for AirPlay.
Wipe clean installed.
Getting worse...
This app keep disconnected from AirPlay.
All iOS devices not working with AirPlay.
iTunes recovery on all 4 iOS devices and installed just this app but AirPlay works for 5~31 minuets then drop. Restarting devices to get work again for 11~13 minuets.
What happened???

JYK.oMaMori about nPlayer Plus, v3.7.3