I just hatched out my first incubator eggs myself. I will tell you what I found from all the reading I did. If there is movement in the egg that is cracked I would still try to hatch it. If no movement bacteria can kill the others because of the temp and humidity needed in an incubator. Yes the chick can still pip with the tape on it if the egg is not covered in tape that is.
Generally you don't want the chicks to pip until the day of hatching or the day before or when they are ready to hatch because they can suffocate or die before they make it out that early.
Also if your humidity drops a lot during lockdown from opening up the incubator a lot or having the power go out (What hapened to me

...), the membrane can turn to leather, "shrinkwrap" and suffocate them or make it impossible for them to pip all the way through because they cant puncture the membrane.
All that being said, if you open the incubator during lockdown to assist in any way place a wet papertowel in there so that you don't kill your humidity Lowest recommended humidity levels I have read for last 3 days in lockdown is 65%, highest recommended was 80%. And try to not open it, the chicks that hatch can stay in there for up to 72 hours after hatching and they really need to dry before you pull them out cuz if they aren't dry pulling them out of that environment weakens their strength. The heat, humidity and yolk they consumed in order to hatch is what they need most those first 72 hours.
What is your temp and humidity at? Hope it all turns out well for you!!!
