Shipped eggs are difficult to hatch anyway. I did two sets of them that were shipped from within the same state (but to far for me to drive) and first set nothing hatched had same results you described from them. second only half hatched.Horrible!! Only three out 10 eggs were fertile!! There was one chick that was barely developed, one that was about 15 days developed, and one that was just days away from hatching but, they all died. The cracked egg the only one in my incubator was never even fertile. But the eggs under my broody Ember all died, so I know it wasn't my fault there. I can tell you one thing though, I am never buying from that lady again.
Auhhhg..... but, I have more eggs coming in the mail (from a different person), but now Ember has to sit 21 more days.And I don't have the heart to "break" her, after all she's been through.
Try to find local eggs if possible. I know sometimes it's hard to find local but sadly shipped eggs you need to order twice what you hope to have hatch and then might not even end up with that.