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 .