Sometimes if the photo is glued to the page you can do the following to help remove the photo.

Place a small towel over the photo.
Use a hairdryer on medium heat. Hold a few inches away.
Use until glue softens to a removal point.

I try not to use the High heat button because I don't want to damage the photo, however, you can use high heat for a few seconds if necessary. The towel is to keep the heat from directly hitting the photo.