Are you referring to the built in app in the LG TV? I do not like that app, and also got very low volume when playing Atmos content. I instead use an Apple TV and play music from that, much better interface and usability. And the sound had better volume. Well worth the 150 EUR. The only benefits with the in-built LG apps that I can find is that you can start them from Beoremote 1, but the remote to the Apple TV is so quick to use so I prefer that anyway (even if I can use the Beoremote 1 for my Apple TV). I can really recommend in investing in a Apple TV, both for music playing and for streaming TV/video.
My B&O Icons:
