After 571 update roon wants me the deauthorize my NAS device which holds the core

[Geoff_Coupe]

I think you missed this post pinned to the top of the Support category of the forum:

QNAP Core Authorization Notice

We’ve seen a few reports that, due to some recent changes in our latest update, some customers with QNAP Cores are needing to re-authorize their Core machine. If you see the Authorizations screen after updating, just choose the Unauthorize option and you’ll be able to continue using Roon like normal! You have our apologies for the inconvenience. If you continue to see issues after doing this please open a new post in #support and our team will help you out as soon as possible. Thanks! Roon Su…