I'm new to hatching but some of my babies were like yours. A lady on here said she gives them 24 hours from the last time they made any movement or pip etc before she intervenes. Have you opened the lid at all? If you have then they could have lost humidity and could be stuck.
She told me to get some kitchen paper and warm water ready, very gently take some shell away trying not to damage any membrane. Only take one egg out and be as quick as you can to open the bator. If the chick moves or you see any blood veins place wet warm kitchen towel back over the egg apart from the hole where the beak is and put back. They may just be taking a rest. Repeat for the rest, however I would probably try the first two and if they move etc I would take it that the others are ok too