A. After updating to Android 12, access to the Auto Play app should be reassigned.
If the headphone's connection status is shown as Disconnected on the Home screen of the Auto Play app, tap the Update icon on the right side of the Disconnected display, and select Allow to find the nearby devices.
In the smartphone Setting, select access to the related apps again.
the app that supports the Service Link feature(Spotify, Endel, etc.)