Hi, for the images to load in the game, you need to have started a new save because at the beginning you are asked to choose your skin tone, and the images depend on that choice plus the genitalia you chose for your MC
Because the images are dynamically generated based on your in-game choices, the Gallery in MENU may show the thumbnail, but the full image cannot always be previewed there. The final result depends on the combinations you selected — meaning you can replay and experiment with different variations
But if you're choosing the MC's color and genitalia, and the image isn't showing up during the game, then I'd ask you to send me a screenshot of how it looks during gameplay on Instagram @endydreams so I can give you better support <3