Hi,
Try to add the following PHP code snippet to the child theme functions.php file to do this
function woodmart_additional_product_tab( $tabs ) {
$tab_title = woodmart_get_opt( 'additional_tab_title' );
if( empty( $tab_title ) ) return $tabs;
$tabs['woodmart_additional_tab'] = array(
'title' => $tab_title,
'priority' => 25,
'callback' => 'woodmart_additional_product_tab_content'
);
return $tabs;
}
You can translate all theme and plugin texts via PO file in WordPress. Here is a video tutorial that should help you translate your website texts with a Loco Translate plugin https://www.youtube.com/watch?v=D3NsDdMzsls&list=PLMw6W4rAaOgKKv0oexGHzpWBg1imvrval&index=3
As for the shipping title, edit it in Theme Settings -> Product page.
Regards
.
