i have 1 account that the cpanel login is working fine , but ftp login not working , it give "530 Login incorrect" !!! is just for 1 account , i have tried to fallowing solution update the ftp service . froce updated all the cpanel services . Synchronize FTP Passwords. added new ftp user for this account . suspend/unsuspend the account . checked the file /etc/proftpd/(username). i have tried filezilla, cuteftp , ftp broiwser , via ssh login , but still ftp login is not working , cpanel does perfectly . the error log show just this two line Sep 2 16:38:58 server proftpd: xx.xx.xx.xx :ffff:188.8.131.52[::ffff:184.108.40.206]) - FTP session opened. Sep 2 16:38:59 server proftpd: xx.xx.xx.xx :ffff:220.127.116.11[::ffff:18.104.22.168]) - FTP session closed. like the ftp session is closed just for this user .!!!!! all the other account are working perfectly .