I have a public StoryMap Tour here:
... but whenever trying to make an AppStudio App of it, the created app will report: "Sorry! No photos in this Tour" ... anyone got a clue why this is?
ImageStorage at Google (which I doubt since it works as a story map)?
Yes, we are able to reproduce this at our end. Unfortunately, its a bug for certain kind of map tour applications and we do have a fix for it. The application template will be updated soon with the fix.
Thanks for your patience.