I have two children who live 50/50 between two home. Ex moved out shortly after separation and moved out of the local area. Children remained being schooled in my local area where they have family and friends. Couple of years ago family Court decided on school choice in favour of them staying in the local area. Ex wasn't happy and stopped supporting kids with their extra curricular activities. Few months ago I applied to court for a CAO due to on going issues with the kids but plan was agreed so withdrew from court. But recently that plan has now been thrown out by Ex and kids have been told they will never get to go their activities when at ex's house. Kids are very upset about this and feel let down and even saying they don't want to stay at Ex house as much. What can I do as discussing this with Ex is impossible due to controlling and coercive behaviour?