On three separate occasions, I have opened the Device Settings window for my Yggy/DigiOne DAC/endpoint. {I went to Settings/Audio/Gear icon/Device Settings}
Twice the window “crashed” as soon as I tried to adjust a setting.
This last time the Roon control app (MacBook) crashed.
All three times the window worked on the second try.
Just to verify, does this occur every time you open device setup for this endpoint?
Can you reproduce the issue once more and make a note of the time it occurs and reply here with that timestamp? We will then enable diagnostics so the team can take a closer look.