A. 1. Check device volume settings: Ensure that your device's volume settings are properly configured. Sometimes, the device's volume may be muted or set too low. 2. Use the app's volume control: Instead of using the device's physical buttons, try adjusting the volume directly within the app to see if that resolves the issue.

B. 3. Restart the app: Close and reopen SonosTube to see if the volume control functions correctly after a restart.