Hi Mustafa,
Try ftp with port 21. SFTP may not work.
Why should SFTP not work? You have programmed that! You cannot run away with the hidden problem behind it.
SFTP will always work if you manually setup SSL certificate created in admin to use it with kloxo. Thereafter, it will not fail.
I suggest that you create a script to create SSL certificate with a command line and copy in respective directories everywhere with their correct names.
Unless you do this, you prove to fail a good programming of kloxo-mr. I have requested you earlier - before the forum crash and also placed details of most directories that require .cert, .key or .pem.
If this is done correct then SFTP shall work without fail. So I reject politely your answer to use port 21.