Hi - I had the original Nik suite(v2!) a lot has changed and I have now downloaded a trial of v8. In Silver Efex when editing a photo, all I see on the right hand side is Loupe, Histogram
and Film type. Nothing else and nothing to expand to open other panes.
The tools that show are dependent on the preset selected. To add additional options click on the Filters section on the left. Not sure why those are called filters but that’s where the additional tools are located.