Username: Enter the username of a Flickr user, from their URL, to pull in all the photos posted by that user. The user's posts must be public.
Album: If you'd like to display the photos from a single Flickr album, enter the album_id from the album's URL, with an asterisk preceeding it. For example: the album id of this album: https://www.flickr.com/photos/vetbonkie/albums/72157653439738204
72157653439738204 . Entering it into Juicer would appear as:
The album must not have privacy settings enabled for it to appear within Juicer.