@Rebecca that’s what mine says too!
It won’t process till after the 31 days before you’re set to return to work
Needs to be 31 day from when your due back to work x
Mine didn't go through but I've had a letter today saying to call HMRC for my code so will be ringing them tomorrow as I go back to work in Nov
I had the same, it says that it’s paused the application until 31 days before I go back to work(not sure if that’s the same for everyone or because I was trying to do tex free childcare at the same time)