I haven't time to read through all of these posts so I don't know if someone has already asked this, but would it be possible for you to lure these chickens into the coop? With food or something?
Whenever we are getting our chickens used to a new coop/or newly bought chickens used to it, we lock them up in it for a few days, maybe even up to a week - so that they know where their home is and that there is nothing to be afraid of in there. If we don't do this we end up having our chickens sleep outside in the trees. We do have an LGD to protect them from predators, but it just gives me peace of mind to know that they are in the coop and warm and dry if it should rain during the night.
Whenever we are getting our chickens used to a new coop/or newly bought chickens used to it, we lock them up in it for a few days, maybe even up to a week - so that they know where their home is and that there is nothing to be afraid of in there. If we don't do this we end up having our chickens sleep outside in the trees. We do have an LGD to protect them from predators, but it just gives me peace of mind to know that they are in the coop and warm and dry if it should rain during the night.