Header continues just loading even after Plugin check

Hullo,

Easingslider used to work perfectly. We haven’t really updated anything, but right now the slider isn’t working anymore. I’ve tried the step of deactivating all the plugins one by one as recommended, but nothing changed. This is the current part PHP for the header;

<div id="container">
<div id="header"><?php if ( function_exists( 'easingslider' ) ) {easingslider( 3933 ); } ?></div>
<div id="imgbox"><?php dynamic_sidebar( 'header' ); ?></div>
<div id="header-shadow"></div>

You can check out the site here: header only loading

We’re not the best coders etc. out there, just updating this site for someone. Any ideas?

https://ww.wp.xz.cn/plugins/easing-slider/