Vouk buddhabas
This issue occurs because there is no preset saved in Scene Design. To resolve this, you must first open Voukoder Pro Designer on the desktop to create and save a preset. Only then will Scene Design open directly in the editing programs so you can create your presets.
See my screen recording in this link showing the procedure.
https://www.dropbox.com/scl/fi/237hy9s…k746d2jgbx&dl=0
I think there should be a default preset saved in Voukoder Pro's Scene Design. I believe this would be the solution to solve this small problem.