IMPORTANT: ThemeForest states that Mill is no longer available
David posted 5 years ago:
I'm not entirely sure what message ThemeForest is displaying to you right now but I believe it's something along the lines of the theme no longer being available. This is because ThemeForest have temporarily disabled Mill due to an issue they claim exists, which we're working with them to resolve and get Mill re-enabled, back on sale, and back in your downloads for updates.
Please rest assured that we're not pulling Mill from ThemeForest and we're not discontinuing support. Apologies for the inconvenience and confusion, it is unfortunately out of our control but as said, we're working to resolve it.