Nreal air with Surface Duo 2 and LG V50

Hi there .
I’ve bought Nreal Air and tried to connect with my devices ( surface duo 2 and Lg v50 - Korea LG u+ version ) both devices are using Nebula install from APK source. Everything seems good with screen sharing , but in AR Space no any Audio even though I’m using a Bluetooth headset. Also 3 buttons on the glass not working.
Is there any advice for me?
Thanks Guys.

Hi, sorry for the late reply. Could you please try to force update the firmware of Air glass? You can do this in V3.1.1 Nebula the path is Me–>Support and Help. Please keep your glass inserted when doing update.