Hi @Mojdehsbt,
The states are set up correctly – and you added the empty state as the first one (0), which is correct when you want a state which is identical to the parent aperture without any added shading or changed modifier.
Try to increase the Radiance parameters with HB Radiance Parameter. _recipe_type should be 2 for annual-daylight. You can set ambient bounces to 6 – there is likely no benefit in setting it higher for this model. Change the detail_level or add “-ab 6” in additional_par.
I also noticed that the file glz_sol_ctl.xml is generated with Quarter Klems resolution. Maybe it will not make a difference in this case, but here is how to make a Full Klems resolution BSDF in WINDOW. I assume the workflow has not changed in WINDOW.