Code snippets appears around the before – after slider

We are using Genesis and Dynamik (Cobaltapps). WordPress, themes, and all plugins are up to date. The plugin is placed on the homepage from widgets.
The problem is that code snippets are on the slider’s top and bottom.
At the top:
<section id=”t20_slider_widget-2″ class=”widget widget_t20_slider_widget”><div class=”widget-wrap”>
At the bottom:
</div></section>
Our WordPress managed hosting, Flywheel, also gives a warning about a security issue related to Twenty20 Image Before-After.
What would you suggest to solve the problem?

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