Control points not working in Silver Efex

Hi there,

I just downloaded Nik 3. It seems to be working fine on my Mac (Catalina 10.15.7) and the updated Photoshop 2021. The only issue is that I cannot use control points in Silver Efex. Control points work fine using the same photo in other filters, just not there. Any guidance would be much appreciated.

Thanks in advance,
Mike