HOW TO ACCESS YOUR SFTP
Home
Step 1 :Click The Connect option under File Menu in coreFTP tool after you select the SSH/SFTP option.
Step 2 : Details enter in Site Manager When connecting to servers, some basic information is needed. 

HOST / IP / URL -- This is the address of the remote server that you wish to connect to. 

An example of a host name would be :  ftp.microsoft.com
USERNAME -- User identification is required to log into most servers. 
PASSWORD -- A password to access a server is usually required. 
PORT -- A port is where you connect to on the remote server. 
You should select the option SSH/SFTP.
SSH/SFTP  - This option will attempt to establish an SSH connection (port will almost always be 22) and run an SFTP session over it.

Step 3: Click Connect in Site Manager. Popup window will appear. Click Yes button for strore SSH Key in browser cache.

Step 4 :After listing folders, use httpdocs folder for upload your site content. Speed of upload may depend on your internet connection.