The FTP settings are as follows:
FTP Host : All FTP Hosts are listed in your Client Portal Under Manage Hosting Accounts > Your Selected Account > Connection Details
FTP Username : Default FTP username are email@example.com
FTP Password : The one you have assigned to your FTP account, for the default one FTP account if you haven't changed it, the password is the same as your initial hosting account password;
port : 21
NOTE: All info required are also in your welcome email.