Problems with authorisations

Yesterday I set up Roon on a QNAP NAS and it worked perfectly. I used my MacBook Air and iPad as controllers. Today I got a message that “The requested URL /cgi-bin/qpkg/RoonServer was not found on this server”. I restarted the NAS and Roon then ran fine.
I went to my Mac to log into the controller and after logging in got a message saying “you have already authorised one device, so f you want to use this core to authorise your library, please unauthorise it below, or get another subscription”. The core below is the Core on my NAS and I only have one Roon login, which I set us yesterday and used with my NAS core. I’ve very confused! Can anyone help?

just click and reauth the NAS

Lol, thanks, fixed it. Newbie error