[Converting to non-CMYK/Gray/RGB/LAB custom profiles]

I was able to solve this by copying the ICC profile to "~/Library/ColorSync/Profiles" (within my user directory, not within the root directory)

The profile shows up! And I am able to convert to it. Working in it is a little weird, but at least I can convert and export.

[Converting to non-CMYK/Gray/RGB/LAB custom profiles]

I am trying to convert an image to the "Midnight + Coral + Yellow" ICC profile on this page: https://colorshift.theretherenow.com/profiles using Affinity Photo, in order to print it using a Risograph printer.

Based on the instructions here: https://affinity.help/photo/en-US.lproj/index.html?page=pages/Clr/ClrProfiles.html?title=Color management, I copied the profile to `/Library/ColorSync/Profiles`. However the profile does not show up in the "Convert Format / ICC Profile" panel as an option, even after restarting Affinity Photo.

My hunch is this is because the profile does not fit cleanly into one of the Color Format categories.

Is there any way to convert to profiles like this?

Thank you!