So I will login as dietpi user and with:
sudo ncc user:disable admin
disable user. If something goes wrong I will make:
sudo sudo ncc user:enable admin
? and everything will be OK?
Edit. I go to my /mnt/Toshiba/dietpi_userdata/nextcloud_data and don’t see folder with my new user admin name. I see Admin folder and two regular users but not that new admin user. That means new admin share files and folders with old admin user?