They may have a “U.S. addresses” but Facebook claims they’re in Pakistan. They have awards logos on their website from 2020 (the website didn’t exist right until 2024). You can find weak reviews on copyright with regards to their enhancing services. We couldn’t locate the highlighted book on their own https://maplepublishers.com/blog/what-is-the-art-of-self-publishing-a-childrens-book/