Why doesn't Filezilla work?

Question

FTP

Here is what it says when trying to check connection settings:
Connecting to probe.filezilla-project.org
Response: 220 FZ router and firewall tester ready
USER FileZilla
Response: 331 Give any password.
PASS 3.13.1
Response: 230 logged on.
Checking the correct external IP
Getting the external IP address from ip.filezilla-project.org/ip.php
Checking the correct external IP
IP 193.150.110.196 bjd-bfa-bba-bjg
Reply: 200 OK
PREP 6339
Reply: 200 Using port 6339, data token 609985768
PORT 193,150,110,196,24,195
Reply: 200 PORT command successful
LIST
Reply: 150 opening data connection
Response: 503 Failure of data connection.
The server sent an unexpected response.
Connection closed
When connecting to the server: Finding an
IP address for ftp1.ruhoster.com
Status: Connecting to ***.***.***.***...
Status: Connection established, waiting for an invitation...
Status : Insecure server, does not support FTP over TLS.
Status: Connection established
Status: Getting list of directories...
Command: PWD
Response: 257 "/" is the current directory
Command: TYPE I
Response: 200 Type set to I
Command: PORT 193,150,110,196,26,145
Response: 200 PORT command successful
Command: MLSD
Error: Connection aborted after 20 seconds of inactivity
Error: Failed to get directory listing
Can anyone tell me what's wrong?
Another client tried it too. (Cyberduck)