Call Duck incubation

[Rileyfinnfarm]

First time attempting to hatch Call Ducklings (shipped eggs).... We are going on day 10 in brinsea maxi incubator. Does this egg look look a little behind in incubation?
Would love any other helpful incubation tips with the Call Ducks too. Thanks

 

[MagpieDucks]

How exciting! It looks just about right! What is your humidity at?

 

[Rileyfinnfarm]

How exciting! It looks just about right! What is your humidity at?

Humidity has been been around 35-45 (not sure if accurate reading) with crazy weather changes in Ohio. Temps are really stable 99.5-99.6F. Only 3 of the 9 shipped eggs are developing. Air cells were in bad shape when they were delivered.