Hi Stephanie... sorry to hear of this skin issue you are having... wow...
I read some of your prior posts.
This chunk of skin coming off
is bad news. Have you seen a dermatologist? He/she might have better ideas to treat it.
I don't know what stoma paste is, nor why any paste would be used on irritated skin. ?
I understand you tried the extenders, a small piece to cover the area. Those things are super strong adhesive. There are skin sheets also available I heard people use. Are you aware of these protective sheets?
There are two powders I have used because my skin actually bled.
The wafer had black spots showing it was dried blood.
I could not have any adhesion because of weeping skin.
My stoma nurse said to use nystatin powder, then a spray protectant... once healed, then use the stoma adhesive powder. There are a few out there that members swear are the best.
You gotta get that skin healed... air dry time is needed, which means everything off allowing air to heal the wound. Maybe a nice bagless shower often would help if it doesn't burn...
Be patient. There are members who will offer sound advice.
Mine cleared up in 1 week. Now, 2 months later, I get 6 to 7 days wear time. The skin, once bright red, is now pinkish. It was purple at the last change (a week ago).
Think about the dermatologist.
You also went from convex to flat.
How far extended is your stoma? Sounds like it is not close to the skin, which means good news. But the leaks... something is wrong.
Sit tight. Help is on the way.