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

Answer:
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.