I’m so sorry you’re having to go through that. Maybe try a Brava ring around the stoma first then the appliance. You could also try a very sticky adhesive called Skin Tac by Torbot. I use Skin Tac and Brava ring, and I’ve had great success. If you try the Skin Tac, try it on a small area of nearby skin first to make sure you don’t have an allergy to it.