Done, have a nice morning!
Btw: Files dropped in Nextcloud in Windows (user:root via smb) are still not visible in nextcloud on android/apple (user:admin).
Trying to get sudo ncc files:scan --all run in a cronjob every 5 minutes as explained here:
https://dietpi.com/forum/t/is-there-an-dietpi-cronjobs-menu/13342/10