You usually can see if eggs are pipped externally & can hear peeping if they pip internally without opening the bator. Personally, I open the bator often during lockdown because I run staggered hatches all the time so have to remove babies as they hatch. I just mist the lid with hot water before closing to get humidity immediately back up where it belongs.I thought I wasn't supposed to open the 'bator in lockdown to check for internal pips....
Post some pix. If there is movement in them then they are still developing but sometimes they quit right before hatch & will lave the yolk sac visible in the bottom of the shell on candling. At this point, as long as there is still hope for them, leave them in the bator. If they are WAY behind on development, raise your temp by 1 degree & turn for a couple more days before candling again. If they still look behind then candle again in 2 days to see where they are then. Once they fill the egg stop turning & put them in lockdown.I'm afraid that I think that most of the eggs are slowly developed... What should I do? Keep them in lockdown? I can post pics of how much the egg is filled if they're needed!
ETA: When I said that part of the egg wasn't filled up, I should've added that the part that isn't filled is the pointy tip if that helps.
Also, when should the eggs start to pip?