Download the advanced profile file that let CyberDuck connect to cynny space from here
Double click on the downloaded profile file: Cynny Space.cyberduckprofile. It will open CyberDuck App dialog and you'll be able to insert credentials: secret/access key. press Login, and CyberDuck will connect your Cynny Space cloud storage.
NOTE: you can get information about your secret/access key by account info section of you Cynny Space admin panel.
IMPORTANT: Quit Cyberduck if it is currently running before editing any configuration file