where is the support structure?
does support structure show in the model preview after slicing?
I have generate support checked in the config.
I went to verify it but if it generated it, it is not visible in the sliced model.
I have a 40x15x2 mm overhang so I am sure it needs it.
Yes, the preview does not know what is sopprt or not, so you will see it if generated.
Depending on slicer it only generated support if it exceeds a certain size or angle and can not be solved by bridging. Also cura for example can set support everywhere or only if support would touch bed.