This was more than wet. This was soaked cardboard and film on the shells, the last egg, and the thermometer. Definitely not normal. The red cord is bloody but not currently bleeding. I’ll try to get a picture.Normal for them to be wet right after hatching.
Humidity spikes big time after each chicks hatches,
but should come back down in a few hours.
Hard to know what the 'red cord' is.