What happened, I'm experiencing the same thing, I have 2 completed diaries for which I can't change the photo. I'm not an admin or anything, but aligning dates with the new year, I believe the error will be fixed between January 1st and 5th with the new raffles for 2024. And the error only happens in the completed diaries, not in the diaries we are currently working on, where we can still select the photos.