The only setting in FileZilla should be under the General Tab.
Host = domainname or your Base IP
Port = (blank)
Encryption = Use explicit FTP over TLS if available
Login Type = Normal
User = username (not root)
Password = password
By default it should take you to your accounts root directory (e.g. /home/domainname)
Make sure port 21 is enabled.
If it still doesn't connect, try to disable the firewall, if it connects, you just narrowed down the problem.
If that fails, set the accounts password to something simple like Passw0rd.