Useful app but where is the support?

I bought this app last week and so far I like it. However, within 30 minutes of use I got annoyed by the way the app manages (or more precisely mis-manage) the selected entry in a tag (group) list after having moved a contact to a different tag (group). I contacted support and provided a detailed scenario to reproduce the behaviour. Still waiting for at least an acknowledgement to any of the 2 emails I sent them. Despite the annoying behavior, I still recommende this application.

GaetanFromCalgary about Cobook, v1.3