Patience is key to hatching.  Just wait and see what happens.  Your humidity is fine.  My most successful hatch, I had a humidity of 55%.  Once they start pipping, the humidity increases on its own.  When I had the humidity at 55%, once they pipped, it jumped up to 70% within half an hour!  They'll be fine. 
I saw a video of people in central America where it is hot and super-humid all summer long, hatching in a "styrobator" that didn't even have a top on it, no thermostat, no electrical parts at all.  The chicks just hatched right there in an open bator on the kitchen table.  It was pretty neat.