They've got a “U.S. addresses” but Facebook suggests they’re in Pakistan. They have awards logos on their own website from 2020 (the web site didn’t exist until 2024). You can find very poor testimonials on copyright about their enhancing services. We couldn’t find the showcased book on their homepage on https://maplepublishers.com/blog/4-ideas-to-find-the-best-self-publishing-agencies/