Thanks for your replay.
I did what you told me, but I'm still unable to login to the ftp account.
Here are the screen's of the global rule I created:




Also here is the screen from the ftp client:

As you can see, the login part is done correctly, but when its time to list the directories it just stops until the timeout error is called.
I talked to the tech guys and they dont have any other solutions for me. They insist that I should double check everything.
They say "you only have to do this to make it done, they say and it should work:
76.9.30.26 <-> your computer (tcp)
arrows mean the incoming and outgoing traffic
this rule allows every tcp protocol based traffic between you and our server"
I'm out if ideas and I would appreciate any help from anyone.
Thank you,
Luka