Once they start roosting most chickens tend to want to sleep in the highest place available. You can still sometimes have problems but usually if the roosts are noticeably higher than the nests to start with then you seldom have this problem. You did not know that so now you have to deal with this.
My first step would be to either raise those roosts or leave those and install new ones. You will probably have to go to the wall just above the nest opening to find an attachment point. That is probably about a foot (30 CM) up which should be enough. I don't see attachment points under the roof to drop hangers.
That by itself might solve your problem, but probably not. They can be creatures of habit and you probably need to break that habit. I see two possible ways to do that. If access isn't too bad you can wait until it is dark and physically move them to the roosts. If it is dark enough they should stay there instead of hopping down. Use a flashlight and as little light as you can. After a few nights they should get the message and start putting themselves to sleep up there. Often when one starts the rest follow.
Another option is to block off the nests when it gets close to bedtime and force them to find another place to sleep. Some people use boards or cardboard. Some people fill the nests with something to make it so crowded they can't get in. Maybe fill a few milk jugs with sand. Whatever method works for you.
They are not laying yet but as you said, they are probably pretty close. I personally want the nests available when they start. Often where they lay their first egg becomes their nest. I want that first spot to be my nest.
They tend to lay anywhere from sunrise until late afternoon. The way I would approach this would be to block the nests in late afternoon, maybe if you feed and water in the afternoon block the nests then. Unblock the nests after it is dark and they are sleeping on the roosts, say when you are locking them up for the night. That way the nests are available when they wake up in the morning.
so retarded how they make these things with them basically on the ground...ugh
That is obviously not a big walk-in coop, it looks like one of those small elevated prefab coops. Access could be a bit limited. You will find that many of us do not like those small prefab coops. They are generally not well designed for chickens. It's not just the roosts. They typically have many more nests than they need which is extra expense, ventilation is usually way inadequate, they typically hold half of the number of chickens they advertise, just so many problems.
Good luck with this.