Scot. You are sure of the hatching date? Give it a a few more days and then you may want to plug the hole and very careful open the box just enough where you can see in and see if he’s oK. Sometimes they get their foot caught on nesting material. It’s unusual but it has happened here. He’s probably just scared…he has no siblings to follow out of the box. If they are feeding him an removing fecal sacs it sounds good to me. So leave things be for now.
Can you plug that woodpecker box hole? If you can, plug that hole. They will easily start a new nest in the same box.
Tammy