Maybe someone can help me?! I have an existing ML system. There the BV7 is the video master and the BS9000 is the audio master. A BLC with IR is integrated. A Beosound Moment is connected to it. The speakers are connected to the BV7 (BL5, BL3). I can call up all the sources from the BLC via the Beoremonte Halo, only the volume control doesn't work. But I can control the volume via the B&o app. Is this not possible in the constellation to control the volume via the Beoremonte Halo or have I made a mistake? Thank you for your help in advance.