I'm so glad they have probably solved it, but if the raw stoma has had some stomach acid on it, it's likely to take a few days now to really fix.
I would suggest after every feed or flush, or at least 3 times a day give a gentle clean around the stoma, use saline if you like. Then apply just a little barrier cream - not enough to leave it feeling wet, but enough to give a bit of protection. The barrier cream should quickly give a lot of relief, but if it wears off a bit, time to clean and put a tiny bit more on.
Think of turning it a bit like turning the stud in an earring, it should be quite easy to give a little turn around.