HC Linux: FTP Users are unable to login

Question: Using HC Linux Panel FTP Users are unable to Login or connect to the FTP Server

FTP user could receive permissions denied error or unable to connect to the Linux FTP Server (Vsftpd,Wu-ftpd,Pro-ftpd) if they don't have ACL Package installed and configured in the Server.
Please follow instructions given in this kb Article to configure and Install ACL Package.