The only possible issues behind test failed are:
1) wrong cdn settings
2) permissions
3) firewall issues (is port 21 closed)
4) passive mode issues (try disabling)
1) CDN settings means ftp setting (correct me if i am wrong) are ok because it is working in my ftp client .
2) Permissions are correct i double checked.
3) How can i know that, it is a firewall issue. Actually port 21 is working in my ftp client and when I go through ssh and connect to localhost.
4) I tried both passive mode disabled and enabled.
Please help me!