Stefan you are not alone having trouble with Roon and Meridian devices. Last October after a Roon firmware update, Roon lost control of Meridian endpoints (218, ID40 etc). The Roon team is aware of the problem and we all waiting for a solution. Until then you will have to use any other non meridian Roon endpoint to listen to your Roon music. Roon loses control of Meridian zone players