iPhone Apple TV Remote App Issue
I am having issues with the Apple TV Remote app on my phone. When my Apple TV 4K is connected via Wifi, the side buttons (volume up/down) work fine. In an effort to increase speed and stop buffering problems, earlier today I connected it using an ethernet cable. Huge improvement with speed and no more buffering (so far) but now the Apple TV Remote app won't control the volume anymore. All of the other features work fine. If I unplug the ethernet cable (putting back on wifi), the side buttons work again for volume control. Someone suggested something checking settings on my internet modem (from a cable TV provider) to make sure that the wifi portion is not a separate network to the wired portion (a setting in my wifi mesh router?). I don't know how I would even check that and even if I did, I'm worried about messing something up and having no internet - wired or not. Thoughts?
Apple TV 4K (2nd generation)