Locking them up for a week inside is to get them used to the new digs, so that they learn to associate the coop as part of their new territory. It's a normal training process to do this, not harm them. This is likely why they're not going inside at night... they're not associating it as their...
This is what I do when I want my birds in for the night, or even during a thunderstorm during the day, because they'll stay out during the storm. I don't run at them, I just put my arms out straight to the sides, and walk towards them, leaning in a little. It's like I'm a predator to them, and...