Does not seem to make a difference whether the photos are set to private or public. I can see most of the thumbnails in browse mode as thumbnails but when I tap on a photo to see a larger size it pops up with the Flickr error message "This photo is no longer available". Slideshows result in all photos coming up with the Flickr error message image.
(BTW- thank you for making this app. This is by far the most versatile and properly implemented cloud-based photo slideshow app I have found, and the settings available satisfy almost every need I have.)
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