FFO will be leaving wide distribution soon and moving into Kindle Unlimited instead. I wanted it to be widely available, but in hindsight FFO isn't the right book to do this with. As a new author and series, the book really needs the extra discover-ability provided by kindle unlimited. It was overly ambitious to put it everywhere starting out.
FFO will likely make a return to wide distribution once all three books are out and it has had a chance to grow and establish itself.