Looking for logging into the Ftp As Root Don't Work 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 Ftp As Root Don't Work site. After that you can login as usual with your login credentials.
https://serverfault.com/questions/34678/how-to-configure-vsftpd-to-allow-root-logins
https://forums.cpanel.net/threads/i-cant-login-by-root-ftp.389931/
https://www.digitalocean.com/community/questions/can-t-connect-to-sever-with-filezilla-using-root
https://ubuntuforums.org/showthread.php?t=2364386
https://unix.stackexchange.com/questions/337788/added-a-user-with-adduser-but-cant-login-with-that-user-through-ftp
https://www.raspberrypi.org/forums/viewtopic.php?t=45818
https://forum.directadmin.com/showthread.php?t=5996
https://askubuntu.com/questions/413677/vsftpd-530-login-incorrect
https://shahmeeramir.com/penetration-testing-of-an-ftp-server-19afe538be4b
http://www.proftpd.org/docs/faq/linked/faq-ch5.html
https://www.youtube.com/watch?v=n5I6oq36Cgo
https://www.youtube.com/watch?v=th4_CjBwJ-k
http://linux-sys-adm.com/ubuntu-16.04-lts-how-to-install-and-configure-vsftpd-on-ubuntu/