Thank you for reaching out, and I apologize for the playback interruptions you are experiencing with your Lumin T2.
Before you perform a factory reset on your Lumin device as suggested above, please hold off. The “Roon lost control because the input switched” message you are seeing is actually a known issue tied to our latest update (build 2.58) that is affecting some Roon Ready devices.
Our engineering team is already actively investigating the root cause of this behavior. A simple restart of your Roon Server (your MacBook Pro) or the Lumin T2 often serves as a temporary workaround for now.
To keep all related reports organized and to ensure you get the latest updates directly from our developers, I am going to move your post into our main tracking thread for this specific issue.