Mockingjay is copyrighted work to Suzanne Collins and her publishers. That means, by copying Mockingjay, you are plagiarizing, which is illegal.
ALL RIGHTS RESERVED. This book contains material protected under International and Federal Copyright Laws and Treaties. Any unauthorized reprint or use of this material is prohibited. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system without express written permission from the author / publisher.
There's an example of the copyright notice in Mockingjay. You should follow it. By plagiarizing, you are violating copyright law, as well as the Wattpad User Agreement. I recommend you take down the book, before Wattpad does for you.