Notice: Jasmine Softbody Problem (Patreon)

Hi again guys, I found why the soft body wasn't working properly and apparently it's because this message "target contains concave polygons" like wtf does this mean??? I have not alter the mesh or something similarand this affects only the breasts, the glutes works fine and I dont have any idea of how to solve this,I start to removing  some morphs from the body and ive been working bac and forward between DAZ and Blender and some far I have no idea how to solve this. Tomorrow Im going to investigate more of this, right now Im kinda tired :S