Built an addition on coop and they won't roost in it.

Hi again! I have a small coop and made an addition on to it in order to accommodate a new roo and hen. Well, long story short they only use the new coop for the nest boxes. I've tried putting scratch in the addition and they just eat it and then still roost in the old coop huddled together, except the poor cinnamon queen who uses the old nest box to roost in and now it has poopoo in it. I figure i should move the old nest box into the addition and that may solve one problem but not the other. Should I give them more time or take the old roost out? It's been less than a month but i don't want them to be losing sleep and getting stressed. Thanks in advance for taking the time to read and respond.

 

Thank you!
The original was only 2.5'x 7'. For the three it was okay at first, but the addition is 4' x 7.5'. Total 5 chickens now.
I'll try to get pics today.