Breadcrumbs, LearnDash, Uncanny Owl

Hi,
We’re using an Uncanny Owl plugin (https://www.uncannyowl.com/knowledge-base/learndash-breadcrumb-links/) to try to override the breadcrumbs in Enfold so that they reflect the way LearnDash is set up. Currently, the breadcrumbs in Enfold do not ‘align’ with LearnDash courses, units, topics and quizzes pages.
We placed this code in our Enfold child theme functions.php file, but it doesn’t seem to be working. Uncanny Owl recommend modifying the header.php but we were unable to do that and we can’t get any support from them. Can you possibly help?

function x_breadcrumbs() {
if ( x_get_option( ‘x_breadcrumb_display’ ) ) {
echo do_shortcode(‘[uo_breadcrumbs]’);
}
}