Mount nfs point on a ftp user home - Permission denied

SYSTEM INFORMATION
OS type and version Rockulinux 9.5
Virtualmin version 7.20.2

hi guys

I’m happily running my Virtualmin but I have a problem with my website FTP users:
I want to mount in every ftp users home a NFS mount folder to my NAS, usually easy to do with mount -t nfs ip:/folder /user/folder

but I got a Permission denied once connected to the FTP

any advice for me?

take care

L.