Thanks for the suggestion Deadalus. Intuitively, I can't see why having the dongle connected via bluetooth should make a difference to permissions between the App and Android 14 OS, but then i'm not a software engineer! The fact that the App works perfectly (ie I can access both the camera and the photo library from within the App) on my old Samsung S9 running Android 10, again without the dongle connected, would appear to indicate that the presence of the dongle is not relevant (as SteveM6 has proposed). I will see what Hornby customer services has to say, but my money is on this being an issue for the app developer to have a look at (especially as BritaniaBuilder has exactly the same issues, and with all permissions granted). I will, of course, try again once the dongle arrives!