And if it's a dud? Nearly three weeks lost...I'd want to quietly pull that frame in four days early in the day and check it's hatched. Could have been resealed incarcerating a worker so would check on that.
Check in three days if its a warm to hot day, check the frame with cell on it to see if the bottom is missing. If it is, close them up for 3 weeks and pray for plenty of good weather.