Assign permissions for ncp to see files

Hi Community,

i have re-configured my nextcloud setup from ncp-config. Everything is working, WebPanel, SSH etc. except when i´m logged in to the webpanel or app my ncp user which i used before had a lot of files which are still existing in the nextloud hdd, but i cannot see it in the panel neither in the app.

i have to assign the rights so that the ncp user can access his “old” files.
Path to the files of ncp: /media/NextCloudDrive/ncpdata/ncp/files

What i must do so that the ncp account can see the files from the path above?