Hi @sobesoft,
If you’re using the customizer, included in Premium Templates, just go to WooCommerce > PDF Invoices > Customizer > Invoice, find the Product item column block and uncheck the Show meta data option:

If you’re using only our free main plugin, you can achieve the same with a code snippet, using the wpo_wcpdf_custom_styles
PDF template action hook, like this:
/**
* WooCommerce PDF Invoices & Packing Slips
* Remove item meta from the PDF documents
*/
add_action( 'wpo_wcpdf_custom_styles', function( $document_type, $document ) {
?>
.meta, .item-meta {
display: none;
}
<?php
}, 10, 2 );
If you haven’t worked with code snippets (actions/filters) or functions.php
before, read this guide: How to use filters