Latest questions about "photofun"

I am just producing 3 large 50 albums - above to finish the second album - however suddenly some of the pages, which were fine until then, showed total red and a big white question mark?

If I download photos using Windows why can't I view them in Photofun? I just see a 'grey' folder & '0' photos.

A large number of photos in my PhotoFun library have error signs now and I cannot open them. I was able to open and view them earlier, but now I cannot due to the error message.