Well, I'd be patient, give it more time. You never know!
If something went wrong during incubation (too hot, too cold, too humid, not humid enough), the ducklings will be weak on hatch. Often if the weak ducklings do hatch, they do poorly (be prepared) and, if you do help one, whatever made it so weak it had trouble hatching will cause it to die or not to thrive. On the other hand, if they run late, often that is too cool and that's not so hard on them. If you have movement in the egg, leave it in the incubator. I've had some really strange things happen and eggs hatch way later than I thought they were supposed to (days later) and do fine. It's a mystery to me!
Your first duckling will probably be ok. Better if you can avoid opening the incubator any more than absolutely necessary though, every time you open it, you stress the remaining eggs. I'm sure that's one reason many don't help until the rest of the hatch is over.