Why images/photos didn't show on Indesign (they are all missing links, but they should shown anyway)

Hi all Adobeses!
A client need a quick fix for her Indesign document.
She didn't send me a whole package with all link and all. I designed the original file so I have the font, I just don't have the all images links.
Normally I can just "ignored" the "missing links" pannel and move on, all images shown anyway.
But for some reasons, this time, they all appear in the gray box. Does anyone knows why? and how to see the images?
I've already selected "Overprint Preview" but still, it didn't work.
Thanks,
Kim