As an aside, I also installed the ANCESTRY app on my iPad, opened the family tree, it synched up, and what I see is:
1) Locally, all photos are shown
2) Web-site, I can click "media" and see all of the hosed pointers and perhaps manually redo all of the broken photos (delete/add).
3) App - This one shows a heck of a lot more placeholders than even the web interface does. It may require that I delete/add photos that look fine for #1 and #2. In other words, this may end up being a real pain.
This was version 18.104.22.1683, which should be the most recent.