FTPeS is a secure FTP protocol that allows users to transmit files over an encrypted channel. Our server supports FTPeS (FTP over explicit TLS/SSL), you may download a FTP client to connect to our server with FTPeS.
Take filezilla as an example, you may setup it via file->site manager

Host: Your hosting web server. It can be sitexxx.mysite4now.net or sitexxx.mysite4now.com or domain.com you have added to your hosting account
Port: 21
Server type: FTPES - FTP over explicit TLS/SSL
Logontype: Normal
User: Your FTP account name
Password: Your FTP account password
When you connect FTPS for the first time, you will get a prompt for unknown certificate

It is the certificate auto-generated by our FTP server agent, please check the "Always trust certificate in future sessions" and click OK.
After that, you can transfer your site files between local computer and server using FTPeS.