Connect Tasks to other service: Hostname?

I want to connect my calendar, tasks and contacts to GalenGoo (a nice calendar application for Windows)
I found how to do that for the Calendar:
I specify the Primary calDAV address as Hostname = https://ecloud.global/remote.php/dav/. Works fine in both ways.
But when I use that for contacts or tasks or it does not work. Is there a separate address for those?