It seems you did everything right. I would suspect the shipping played a major role and the questionable egg would make me think twice as well.
Maybe another breeder would do a better job. Can you find anyone in state at least? I had eggs shipped from NC to AZ arrive in perfect shape but had a...
Hi there. I'm sorry for the bad luck!
Did you calibrate your thermometer and hygrometer? When I did mine one hygrometer was off by 7% and a thermometer was off by 2 degrees.
Were the eggs local or shipped? That can also be a big factor.