FTP not working

After I just set up my site I swear FTP worked. Then the website went down for hours and the FTP stopped working. The site is back up the the FTP is doesn't work. I can resolve the name of the site. I tried Win cmd and filezilla and got a connection time out.

site is trades.altervista.org

From filezilla:
Status: Resolving address of ftp.trades.altervista.org
Status: Connecting to 78.129.205.42:21...
Error: Connection timed out
Error: Could not connect to server
Status: Waiting to retry...
Status: Resolving address of ftp.trades.altervista.org
Status: Connecting to 78.129.205.42:21...
Error: Connection timed out
Error: Could not connect to server


From Windows:

C:\Users\Greg>nslookup ftp.trades.altervista.org
Server: my.meraki.net
Address: 192.168.0.1

Non-authoritative answer:
Name: ftp.trades.altervista.org
Address: 78.129.205.42


C:\Users\Greg>ping ftp.trades.altervista.org

Pinging ftp.trades.altervista.org [78.129.205.42] with 32 b
Request timed out.
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 78.129.205.42:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

[Gianluca]

Your website is online, please perform the tests you can find here: http://forum.en.altervista.org/issue...-problems.html , you should test ftp.trades.altervista.org, even a simple traceroute would be fine