Hi all - I have been trying for months to get past a part in pursuing P Pettigrew that no one else seems to have trouble with. After getting through the door using the password from the portraits I can't get through the next area. It is an L shaped room with two boggart/dementor wardrobes. After defeating them, no door opens and I can't move on. There is a twinkling magical looking area near the door but no spells, movements, etc seem to help put something there or complete whatever still need to be done. I feel like I've tried everything in multiple attempts.
Can anyone help? Much, much thanks.