Calibre Permissions

I am trying to setup the Calibre App in TrueNAS Scale 24.04.0.
I add additional storage a NFS share. If I leave everything on default the app sets up with no problems but when I try to import books or library data from another instance I had on another PC I cannot use them because access is denied.
When I enable permissions autoconfiguration tick Run CHOWN Run CHMOD with 700, 770, 777 it fails because Kubernetes says is insecure.
Can anyone tell me how to set up my permissions in order to be able to use the app? Has anyone managed to make it work?
Thanks in advance