Can´t see the button

Hi!

I can´t see the scroll button on the page, I only see it in the admin area. I have included the page I want it displayed on. I´m running WP 4.0 and I´ve made the theme by myself. Do I have to add something in the functions.php in the theme directory?

Please help

https://ww.wp.xz.cn/plugins/wpfront-scroll-top/