healing/cloning/removal tool stopped working

I got the healing tool to work in part of my photo but as I try to erase dirt smudged on the wall it refuses to cover it. Whether I use generative AI, plain removal, heal or clone tools. The app is completely up to date & even restarted my pc & the app several times. It always seems to act up on Sundays.... which happens to be the  only day I have most availability to edit photos 😞