Could be improved to give better user experience.
I am using this app in my iPhone SE2020. It works almost perfectly but unfortunately doesn’t allow to use “private listen” when the phone is connected by Ethernet cable connection. With Wi-Fi it’s all good but when using lightning Ethernet adapter then private listening will not turn on. I can use all other functions of the app in Ethernet connection mode except this one. Without private listen this app is useless for me because I am using a hearing aid and I discovered that through iPhone I can use hearing aid as headphone because iPhone transmits audio directly to hearing aid when it is connected and system sounds are allowed to play.