Getting chickens to go into the coop

I have a flock of 16 lovely temperamented ladies (they take turns being bossy occasionally).

I also have a crew of 7 new chicks (about 12 weeks old). I have slowly introduced them to the original flock. I keep trying to completely transition them to the coop and run, but they just will not go in the coop at night.

They sit under the coop in the corner. The first couple of times this happened I put them back in the garage for safety. I just don’t want to keep doing that as they are way big enough that they need to be out with their sisters.

It’s been two days and they just will not go on the coop, all the years I’ve had chickens. I’ve never experienced this and I’m not sure what to do to get these girls in there. I even occasionally picked them up and put them in the back door of the coupe so they have to exit the ramp into the run, but that doesn’t seem to make a difference.