Photos could certainly help a lot, both outside the coop and inside. How old are your girls and what breed are they? They are not some that can't fly, like Silkies, are they?
Chickens are creatures of habit. When you moved them they had to learn new habits. Sounds like you need to do some training. I do that by locking them in the coop at night until they start going in on their own. Sometimes they learn fairly quickly. sometimes it can take two or even three weeks. Each group is different.
I personally don't care where they sleep as long as it is predator safe and not in my nests. It seems to be important to many people that they actually roost but I leave that up to them. If they want to, they will sleep on the roosts. Setting them on the roosts after it is really dark is one way to train them to sleep up there earlier than they normally would on their own. But that doesn't always happen overnight.
Usually with things like this it is not that they can't, they just don't want to. Young chicks have no problems flying up to my roosts when the broody hen tells them to. If raised without a broody they may fly up there during the day to play but still sleep on the floor until they are 2 to 3 months old.
So you don't know if they will go in the coop on their own when it turns dark, you bring them in earlier. Your complaint is that they won't roost, not that they don't go in on their own.
So your coop is elevated. I have more problems getting mine to go into an elevated coop than one on the ground. I don't use a ramp. Once mine are trained to sleep in the coop they have no problems flying up on their own, it's a case of want to, not ability. But I'll mention photos again, they might help a lot.