// shipper information label

add_filter('wpcfe_shipper_label', function(){
    return __('Custom Shipper Information', 'wpcargo-frontend-manager');
});



// receiver information label

add_filter('wpcfe_receiver_label', function(){
    return __('Custom Receiver Information', 'wpcargo-frontend-manager');
});



// shipment information label

add_filter('wpcfe_shipment_label', function(){
    return __('Custom Shipment Information', 'wpcargo-frontend-manager');
});