It's because the team did not list it there.
Fatbtc is a joke and I would not send any of my funds there ever.
I also would like to recommend this stay away from that exchange my withdrawal request got processed after 48 hours that is really slow. I hope in future this token will be listed on good exchange than it will make the process of so fast. Let's see when happen this thing we need this to make involve more community into this project.