Very critical timing....day 20 when you had the bator full of almost pipped chicks and unplugged it to transport for 10 minutes. Even 2 minutes without the proper heat/humidity in the hatching environment would have thrown them off. And depending on the outside temp/humidity wold have changed the process for them drastically.
Even a slight chill at that time would cause them to die inside their shells. On day 18 through 21, 22, 23 they are in LOCKDOWN until they hatch, which means their bator temp/humidity is at perfection at all times. You do not open it, or change anything about it until you see fluffy little chicks.
Better luck next time.