Help with removing code from old theme

I recently switched my builder from Avada to Divi after my website crashed.

I deleted Avada, but some of the old code is still showing up at the top of each blog post. (Old fusion code)

Is there a way/plug-in to remove this code all at once?

There are about 300 blog posts, so I’d love to not need to do it manually.


This site will teach you how to build a WordPress website for beginners. We will cover everything from installing WordPress to adding pages, posts, and images to your site. You will learn how to customize your site with themes and plugins, as well as how to market your site online.

Buy WordPress Transfer