add_action( 'template_redirect', function() {
    global $wp;
    $wc_frontend_manager_page_id = get_option( 'wc_frontend_manager_page_id' );

    if ( wcfm_is_vendor() && isset( $wp->query_vars['page'] ) && is_page( $wc_frontend_manager_page_id ) ) {
        wp_redirect( wcfm_get_endpoint_url( 'wcfm-products', '', get_wcfm_page() ) );
        die;
    }
} );