The main product image does not have a pure white (RGB 255,255,255) background. Walmart flagged the image and will not enable zoom or use it in marketing slots.
Walmart requires the primary image to show only the product on a pure white background, with no text, watermarks, props, or lifestyle context. Off-white, gray, transparent, or photographed-on-fabric backgrounds fail automated checks. Additional images can show lifestyle context, but the main must be isolated.