Es gibt ein Problem mit Ihrem Roon Server Ihr Roon Server ist online, aber es gibt ein Problem, das den Zugriff verhindert. Weitere Informationen finden Sie in der Roon-App X Trennen von Roon Optimized Core Kit
It appears this was a temporary authentication issue where the ARC app became stuck in an invalid state. Reinstalling the app refreshed the authentication and resolved the behavior, which matches what you observed.
We are already tracking this behavior internally, so for now we recommend keeping ARC up to date. If the issue reoccurs, reinstalling the app should restore normal operation.