Adsense in my project Android

Hello, I would to enter my script (Adsense Unit) in my project. It is a banner in bottom, example:

<script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>

<!-- puzzle slide blox -->

<ins class="adsbygoogle"

     style="display:inline-block;width:320px;height:50px"

     data-ad-client="ca-pub-myid"

     data-ad-slot="myslot"></ins>

<script>

(adsbygoogle = window.adsbygoogle || []).push({});

</script>

If I enter this code before tag </body> in a div with position fixed, the apk generated by cocoonjs doesn't work!

But if I delated this code, apk works. Why? Is there a specific method to enter the unit Adv?

Regards.