Jamroom Hosting uses SFTP - Secure File Transfer Protocol
if you have had web hosting before, you likely are used to connecting to your server using
FTP - File Transfer Protocol.
FTP is a "clear text" protocol, in that everything is sent over the internet in "clear text" - including your username and password, which in this day and age is a pretty bad idea.
Jamroom Hosting
only uses SFTP - there is no FTP server running on any Jamroom Hosting server.
Connecting to your server using SFTP is just as easy as using FTP - just make sure you select "SFTP" as the connection method or protocol and you should be set.