Set-up Leaseweb Seedbox

[Mind-Eracer]

Yeah, I did all that and created a user account etc..

But I'm using filezilla, And it connects but I get this error:
Error: Transfer channel can't be opened. Reason: No connection could be made because the target machine actively refused it.
Error: Could not retrieve directory listing

what Do I need to do, open another port?

EDIT: I got ot to work, with Core FTP, but can't get it work with filezilla..