Why can't I change a file title?

Hi there, I have a folder with 76 photos in it. They all have title and captions. On three of them, Mylio will not allow me to make changes to the title or caption. Any idea why this should be and what I can do about it?

That’s very odd. Anything particular about those photos? Are they a different format than your other photos? Perhaps you can include a screenshot so we can look at possible causes?