Thanks. It seems this is another case of AMD being strict when it comes to OpenGL on Windows. While I don't have any PC with AMD card around, I did detect some errors when testing the app on another PC of mine running Intel GPU + Windows and made a quick fix (details in this post). Can you try to download and test it again?
The blinking green panel is intentional btw, to show where the interaction panel is. See https://kgm.itch.io/satania-buddy/devlog/635604/2023-11-14-character-importer