They may have a “U.S. addresses” but Facebook states they’re in Pakistan. They've got awards logos on their Site from 2020 (the website didn’t exist right up until 2024). You can find poor evaluations on copyright regarding their editing services. We couldn’t locate the highlighted book on their own homepage https://maplepublishers.com/blog/services-authors-receive-from-self-book-publishers-in-london/