Post editor display issue

Hi all,

I created a website for a friend using OceanWP and Elementor. I set up the blog on the WordPress customizer. When I go into the old blog post or try to create a new post, the header is displaying in the editor with the text barely visible over the top of it. I didn’t have this issue with another website using the same theme and plugin. I would like him to be able to edit his blog and actually see what he’s doing but I do not want to get rid of the header art. Am I missing a setting somewhere? Suggestions?
A screenshot of what I’m referring to:
https://monosnap.com/file/aiXmXVyq5RpaEkTaSl7t5CsthT6acV

The page I need help with: [log in to see the link]