Trouble removing global hero header from standalone Testimonials grid page

Hi GP Team! I am using GeneratePress 3.6.1 with the Block Element editor. I am trying to build a standalone Testimonials grid page (Page ID: 1829) for a custom post type. However, a global hero header background image is stuck at the top of this page. I have tried using a Layout Element to disable the Site Header, checking all the ‘Disable Elements’ sidebar toggles on the page itself, and applying custom CSS to hide .page-hero, but the background image will not go away. Could you help me identify what global setting or element is forcing this background to display on this specific page ID?

I left the CSS code under the customizer Additional CSS for your review. I am providing the link to the website admin in the private information below. Temp pswd will be provided when requested.