Have you tried using the “Add network share” at the bottom of your second screen shot? It seems doing this manually may solve your issue.
the problem is solved, it turns out that it was necessary to manually register the path to the smb folder so that roon will see it and start scanning
Good to hear
There seems to be a bug, which is currently investigated. Local files should actually not need to be mounted over smb.
See:
https://community.roonlabs.com/t/roon-server-stopped-after-update-qnap
This might be a workaround, but I’d recommend to change it back to local files, once the issue is resolved.