ssl for ftp

hello,

ssl for my domain is showing 56 days left in cwp pro  and have valid SSL installed for all services i.e. mail, webmail, ftp, cpanel , but when i conntect to ftp via ftp client (filezilla) , it shows certificate expired. see the below snapshot for reference. kindly suggest me how to fix this ssl expiry message issue.

in cwp admin go to hostname changer and just click save hostname and it will generate all new SSL config including for ftp.