Group not found

I can import all the pictures from my account without problem (even created a gallery with those). But since the project I'm working on depends on a flickr group I wanted to import from the group pool instead of the user account.
When searching for it via the group sub-module, it returns nothing with the group name. When widening the search, it returns other groups and also one group from a previous Flickr account my office had.
Is it a setting in the Flickr group ?
Is there a way to search with the group NID (more precise) instead of the group name ?
Any help is welcome.
Kind of new with this kind of tasks in Drupal.