The download URL works - post your va-template file.
For the FTP - when you log into FTP, what's the directory path tot he /lib/fsfk folder?
it's probably has to be:
*/
Config::Set('FSFK_FTP_SERVER', 'ftp://server72.hosting2go.nl/subdomains/va/httpdocs/lib/fsfk');
Config::Set('FSFK_FTP_PORT', '21');
Config::Set('FSFK_FTP_USER', 'fgroeneveldt');
Config::Set('FSFK_FTP_PASS', '');
Config::Set('FSFK_FTP_PASSIVE_MODE', 'TRUE');
Config::Set('FSFK_IMAGE_PATH', '/lib/fsfk');
Passive mode is set to true.
Post your va-template, it will most likely be correct