Recast not covering the terrain nicely

Maybe you need to click the ‘Transform’ tool

Though adding points should only work if you have that selected.

I checked that ‘shift+alt+click’ works for me, are you sure you are clicking right on the point? (the point should become larger and pure red when shift+alt are pressed and you hover over them).

Once I hold down shift + alt the first UI button “the hand” gets automatically selected so clicking on the point doesnt do anything

Yeah it looks that way, but from a functional point of view the transform tool is still active.