Minimwatch icon with red background

[Gonzalez]

I have just noticed that my Minimwatch icon has a red background. Hovering my cursor over the icon I receive the message "MinimServer (Johns-Macbook-Pro-M3Max.local): content directory path is empty". Clicking on the icon and then on Properties I opened the Server Properties screen which indeed shows that contentdirectory is empty.
I have downloaded (and paid for!) MinimServer 2.2 and recently successfully updated to the r4 version after having upgraded my MacBook to the Sequoia OS. But looking at the page in the MinimServer page which tells me which version I have it says that I have the Version 2.2 Starter edition with its limited functionality.
My MinimServer application is hosted on my QNAP NAS269 server where all my music is saved. In Linn's app I can still access my music through the Minimserver icon.

So I am puzzled. What has happened? I am not sure what the full content directory I should enter in the Server Properties screen. Can you help please?