I agree they don't like change, but at the same time they will adapt. Don't beat yourself up, they will soon get over it.
Do you have a window so they can see to go to bed? Do hey have enough light outside, maybe form street lamps or a security lamp, that it stays light outside? It may be possible that by the time they are ready to go to bed it's too dark to see inside. A dim light on a timer may be the answer. Or more window.
I sometimes have to train birds to go into the coop at night. Since yours were roosting on the roosts before I'll assume they are a bit older than young chicks. I also assume it is all the chickens, not just a few. If it's just a few of them the whole situation changes. When I train them to go into the coop at night, I occasionally only have to do that once. Sometimes it takes three weeks for all of them to catch on. You've only been putting them in four days. Keep it up, they should catch on.