Move the button from bottom to top

Hello,

I"m using this plugin to make my site mobile-friendly. At the bottom, we have the switch button to change from mobile to desktop and vice versa.

I'd like to move that button to the top of the site, i found the switch button code at the footer.php file but i don't know how to do that?. Could you help me take a look?

Footer.php
Header.php

Thank you,
Tuan.