The colors in color patches in Colorway turn to black when drag&drop color library or changing by color picker.
Since Photoshop CC 2018 in Windows system, the Photoshop working profiles are not installed in
It will be installed in
C:\Program Files (x86)\Common Files\Adobe\Color\Profiles\Recommended.
As quick solution you must create manually an Alias of the profiles into
C:\Windows\System32\Spool\Drivers\Color to be detected in nT Colorations.