"I am attempting to add Findagrave sources to my ATM and now see the "Xs" for photos there." posted by OP.
I am -not- copying photos from findagrave. When I viewed findagrave I saw the X's. I thought it odd and then I read the above post. It seems very odd that the poster seems to have seen it on both sites. I -only- saw the X's on the findagrave website. In the past, I experienced an issue on ancestry where all my photos were replaced with X's. I can't remember if this was in connection to my first attempts to sync or something else. I was not the only one at that time and contacted ancestry who assured me the problem was temporary. Perhaps they use the same..?