They may have a “U.S. addresses” but Facebook says they’re in Pakistan. They have got awards logos on their Web-site from 2020 (the web site didn’t exist until 2024). You will find weak opinions on copyright regarding their editing services. We couldn’t find the showcased book on their own homepage https://maplepublishers.com/blog/why-should-you-trust-maple-publishers-to-publish-your-next-book/