ffl-show-display-name-for-admins.php

<?php
/**
 * Show the display name field for administrators in the WordPress dashboard.
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */

function my_ffl_show_display_name_for_admins( $hide_display_name, $user ) {
	// bail if not in dashboard and not an administrator
	if ( is_admin() && $hide_display_name && current_user_can( 'edit_users' ) ) {
		return false;
	}

	return $hide_display_name;
}
add_filter( 'pmpro_ffl_hide_display_name_profile', 'my_ffl_show_display_name_for_admins', 10, 2 );