@Casper So I’ve just tested everything. The app installs fine and can find and add all three of my speakers, which is great news! I can use the volume and mute controls through Homey as well, also great! The main issue I’m having however is setting it up in Flows. I used the app for Flows before in conjunction with IFTTT and NumCatch. This way I could say to Google Home “set tv volume to #” in which IFTTT would start the Flow with NumCatch in it. That would then pass along the number in a Flow for the Sony app to change the volume. This worked flawlessy before.
Currently this does not work unfortunately. I have tested the Flow with other devices to make sure the Flow is set up correctly. Everything works there. I think the issue is now how the app controls the speakers. It uses a percentage now instead of direct numbers. Before I could input “volume 18” and the soundbar would set the volume to 18. Now I have to use a percentage, which for some reason will result in a volume exactly the halve of the value. I think because max volume is 50 (this is the same case with controlling the Volume of the Chromecast function using Google Assistant). If set it at 20%, the volume will be set at 10. But there is no way to use a “number” tag, it will not change the volume. This is the main issue I’m having (which worked before).
I hope the issue is clear because it’s kinda hard te explain cause of the Flows I use.