Replaces the default Avada breadcrumbs with the Yoast breadcrumbs included in the WordPress SEO plugin. Usage: Copy this file in your wp-content/mu-plugins/ folder (if that folder doesn't already exist, you will have to manually create it.

custom.php

<?php

/**
 * Replace the default Avada Breadcrumbs with the Yoast SEO Breadcrumbs.
 * Overrides the parent theme's themefusion_breadcrumb() function.
 */
function themefusion_breadcrumb() {

	// Early exit if the yoast_breadcrumb() function does not exist
	if ( ! function_exists( 'yoast_breadcrumb' ) ) {
		return;
	}

	return yoast_breadcrumb( '<p id="breadcrumbs" style="display:table-cell; vertical-align:middle;">','</p>', false );

}

/**
 * Replace the default Avada Title Bar.
 * Overrides the parent theme's avada_current_page_title_bar() function.
 */
function avada_current_page_title_bar( $post_id ) {
	global $smof_data;

	ob_start();
	if( $smof_data['breadcrumb'] ) {
		if ( ( $smof_data['page_title_bar_bs'] == 'Breadcrumbs' && get_post_meta($post_id, 'pyre_page_title_breadcrumbs_search_bar', true) == 'breadcrumbs' ) ||
			( $smof_data['page_title_bar_bs'] != 'Breadcrumbs' && get_post_meta($post_id, 'pyre_page_title_breadcrumbs_search_bar', true) == 'breadcrumbs' ) ||
			( $smof_data['page_title_bar_bs'] == 'Breadcrumbs' && ( get_post_meta($post_id, 'pyre_page_title_breadcrumbs_search_bar', true) == 'default' || get_post_meta($post_id, 'pyre_page_title_breadcrumbs_search_bar', true) == '' ) ) ) {
				echo themefusion_breadcrumb();
		} else if( ( $smof_data['page_title_bar_bs'] == 'Search Box' && get_post_meta($post_id, 'pyre_page_title_breadcrumbs_search_bar', true) == 'searchbar' ) ||
			( $smof_data['page_title_bar_bs'] != 'Search Box' && get_post_meta($post_id, 'pyre_page_title_breadcrumbs_search_bar', true) == 'searchbar' ) ||
			( $smof_data['page_title_bar_bs'] == 'Search Box' && ( get_post_meta($post_id, 'pyre_page_title_breadcrumbs_search_bar', true) == 'default' || get_post_meta($post_id, 'pyre_page_title_breadcrumbs_search_bar', true) == '' ) ) ) {
			get_search_form();
		}
	}
	$secondary_content = ob_get_contents();
	ob_get_clean();

	$title = '';
	$subtitle = '';

	if( get_post_meta( $post_id, 'pyre_page_title_custom_text', true ) != '' ) {
		$title = get_post_meta( $post_id, 'pyre_page_title_custom_text', true );
	}

	if( get_post_meta( $post_id, 'pyre_page_title_custom_subheader', true ) != '' ) {
		$subtitle = get_post_meta( $post_id, 'pyre_page_title_custom_subheader', true );
	}

	if( ! $title ) {
		$title = get_the_title();

		if( is_home() ) {
			$title = $smof_data['blog_title'];
		}

		if( is_search() ) {
			$title = __('Search results for:', 'Avada') . get_search_query();
		}

		if( is_404() ) {
			$title = __('Error 404 Page', 'Avada');
		}

		if( ( class_exists( 'TribeEvents' ) && tribe_is_event() && ! is_single() && ! is_home() ) ||
			( class_exists( 'TribeEvents' ) && is_events_archive() ) ||
			( class_exists( 'TribeEvents' ) && is_events_archive() && is_404() )
		) {
			$title = tribe_get_events_title();

		}

		if( is_archive() &&
			! is_bbpress()
		) {
			if ( is_day() ) {
				$title = __( 'Daily Archives:', 'Avada' ) . '<span> ' . get_the_date() . '</span>';
			} else if ( is_month() ) {
				$title = __( 'Monthly Archives:', 'Avada' ) . '<span> ' . get_the_date( _x( 'F Y', 'monthly archives date format', 'Avada' ) ) . '</span>';
			} elseif ( is_year() ) {
				$title = __( 'Yearly Archives:', 'Avada' ) . '<span> ' . get_the_date( _x( 'Y', 'yearly archives date format', 'Avada' ) ) . '</span>';
			} elseif ( is_author() ) {
				$curauth = get_user_by( 'id', get_query_var( 'author' ) );
				$title = $curauth->nickname;
			} elseif( is_post_type_archive() ) {
				$title = post_type_archive_title( '', false );

				$sermon_settings = get_option('wpfc_options');
				if( is_array( $sermon_settings ) ) {
					$title = $sermon_settings['archive_title'];
				}
			} else {
				$title = single_cat_title( '', false );
			}
		}

		if( class_exists( 'Woocommerce' ) && is_woocommerce() && ( is_product() || is_shop() ) && ! is_search() ) {
			if( ! is_product() ) {
				$title = woocommerce_page_title( false );
			}
		}
	}

	if ( ! $subtitle ) {
		if( is_home() ) {
			$subtitle = $smof_data['blog_subtitle'];
		}
	}

	if( ! is_archive() && ! is_search() && ! ( is_home() && ! is_front_page() ) ) {
		if( get_post_meta( $post_id, 'pyre_page_title', true ) == 'yes' ||
			( $smof_data['page_title_bar'] && get_post_meta( $post_id, 'pyre_page_title', true ) != 'no' )
		) {

			if( get_post_meta( $post_id, 'pyre_page_title_text', true ) == 'no' ) {
				$title = '';
				$subtitle = '';
			}

			if( is_home() && is_front_page() && ! $smof_data['blog_show_page_title_bar'] ) {
				// do nothing
			} else {
				avada_page_title_bar( $title, $subtitle, $secondary_content );
			}
		}
	} else {

		if( is_home() && ! $smof_data['blog_show_page_title_bar'] ) {
			// do nothing
		} else {

			if( $smof_data['page_title_bar'] ) {
				avada_page_title_bar( $title, $subtitle, $secondary_content );
			}
		}
	}
}