[Plugin: Flickr API] says "No galleries found for that user " but I have 2

I installed this, entered my API key, went onto flickr and created some galleries; but when I go into a page and click the flickr icon, the popup shows but when I click the “Galleries” radio button, it tells me “No galleries found for that user ” – but I actually have 2 galleries set up. Is there something else I have to do to make them show up?

I doublechecked my username, it’s correct in both the settings and the popup.