My post office is wonderful.
But sometimes stuff happens. Once, I ordered chicks from Cackle Hatchery, and for some odd reason, those chicks turned up at a Post Office about 30 miles away over my country roads. I went to pick them up there, as it would have been another day in transit for them to get to my Post Office. Thank goodness they called me. When I got there, the Post Office had heard the peeping and they were opened up to show to a little bunch of kids, which was cute, but probably not super for the chicks.
Those chicks never did do well, never, and finally one night a raccoon got in and killed every single one. I HATE raccoons. I think those poor chicks were just jinxed!
When my eggs have not hatched, sometimes it has been my fault, because I have not known what I was doing. I think I am much more experienced now.
One way to test whether it is you, the hatcher, or a problem with the shipped eggs, is to put two or three of your OWN eggs in there, and see if they hatch. Assuming, of course, that they are fertile.
Catherine