Change 404 page title

Hi there,

You can create a Block Element – Content Template and assign it to display to the 404 page.

This would allow you to override that entire page.

Alternatively, you can try adding a snippet like this:

add_filter( 'generate_404_title','generate_custom_404_title' );
function generate_custom_404_title()
{
      return 'Custom 404 title';
}

Adding PHP: https://docs.generatepress.com/article/adding-php/#code-snippets

As you are using content template, why not just add site title into the current h1 headline block?

We can not control how breadcrumb outputs, the filter can only change the title in GP’s template.

You will need to reach out to the breadcrumbs plugin for this.

You are welcome   🙂