1.You need to dowload this program and install

Link

2..You install and you see this sftp is a defaul use for LemeHost servers and etc

3.Put the name of your ip(hostname)имя хоста port your port Username in Имя Пользователя Password(пароль)put your password All this login detail you can find in tab SFTP in your panel

4.And press enter(войти) to enter in your directory(if you see icon of sertificates you need to press yes)

5.And you on the directory of your server