I’ve had similar issues (7 weeks post)… I apparently have a low spouter and dip around the stoma. I’m using a convex baseplate and barrier ring - for a while was getting regular leaks. Solve that with tweaking hole size better, then was advised to apply the ring to the baseplate before applying to stoma (this helped massively as seemed to never get a good stick applying directly), then lastly tried warming baseplate and barrier ring by placing under waistband or using hairdryer as above - also helps adhesion.
Fingers crossed no leaks for a while, but feel you on the occasional lifting (not gas, but baseplate loosening sometimes later in day) with a little red itchy, sometime bleedy area under the lift…
i am currently finding sometimes the barrier ring seems to expand into the stoma hole of the base plate (which I think is what you’re finding too?) then output can find its way under, or sometimes both lose adhesion a bit when I move (normally at the bottom as you say, but for me I think it’s due to my convex and the shape of my tummy settling still)… playing with how close I put the ring to the baseplate hole seems to be helping this (so far around a mm in, so when the ring expands from absorbing a little liquid it fills that gap rather than encroaching too much into the hole itself. Oh and the stoma shrank a little bit again last week so a new template hole size.
I’m waiting to receive and try a stoma belt to clip on to my convex… as above, it seems this might help keep him secure and stop/decrease unsticking when I’m active… we will see and I’ll let you know!
Semi related - I’ve tried a level 1 support waistband (Comfizz) with the same idea, but for me one stoma gets active it just seems to lead to pancaking and potential for output to squeeze to local skin (which resolves itself as soon as waistband removed). It helps to wear for 30 mins post change to keep secure but I don’t get how some people can wear these all day… perhaps it’s coz of my “low spouter” or I’m wearing it wrong.
Guess we are always learning on this journey
Pete 🤓