Looking for logging into the Root Sftp site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Root Sftp site. After that you can login as usual with your login credentials.
https://askubuntu.com/questions/400858/how-to-configure-sftp-to-login-in-the-directory
https://unix.stackexchange.com/questions/111026/how-to-use-sftp-on-a-system-that-requires-sudo-for-root-access-ssh-key-based-a
https://forum.ubuntuusers.de/topic/sftp-als-root/
https://winscp.net/eng/docs/faq_su
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/v2v_guide/preparation_before_the_p2v_migration-enable_root_login_over_ssh
https://www.digitalocean.com/community/questions/unable-to-establish-sftp-connection-with-root-user
http://www.google.de/url?url=http://www.webhostingtalk.com/showthread.php%3Ft%3D1471133
https://ubuntuforums.org/showthread.php%3Ft%3D2287618
https://www.linode.com/community/questions/2787/sftp-root-user-access
https://ourcodeworld.com/articles/read/777/how-to-allow-ssh-and-sftp-access-as-root-on-your-aws-ubuntu-16-04-instance
https://devanswers.co/configure-sftp-web-server-document-root/
https://linuxconfig.org/how-to-setup-sftp-server-on-ubuntu-18-04-bionic-beaver-with-vsftpd
https://forum.filezilla-project.org/viewtopic.php%3Ft%3D12977