Hatching dove

[Newseramabreeder]

I had a dove lay a egg on December 17th she layed another on the 18th today is the 31 I know there fertilized i candles them every 2 or 3 days yesterday i candled and saw a heart beat today is day 14 they haven’t hatched for some reason are they ok?

 

[MGG]

I had a dove lay a egg on December 17th she layed another on the 18th today is the 31 I know there fertilized i candles them every 2 or 3 days yesterday i candled and saw a heart beat today is day 14 they haven’t hatched for some reason are they ok?

What kind of doves are they? Do you have a calibrated thermometer in the incubator?
Candle the eggs again.