Sometimes Roon becomes confused and thinks that your regular server is a new one. If you click the Unauthorize button, it will ask if you want to disconnect your license from the server it’s associated with. Say yes and it should show you a list of the servers it finds, which will probably be your regular one. Then you can reconnect to it.
Thanks for reaching out to ask us about this issue. Have you tried using the “Unauthorize” button that @Suedkiez and @Mr.Flibble pointed out? That step usually resolves the problem right away. If you run into any trouble or need clarification, just let us know — we’re happy to help!