hide logo on invoice but display logo on packlist

Hello @diamanta29,

Try using this code snippet:

add_action( 'wpo_wcpdf_custom_styles', 'wpo_wcpdf_custom_styles', 10, 2 );
function wpo_wcpdf_custom_styles ( $document_type, $document ) {
  ?>
  .invoice td.header img {
    display: none !important;
  }
  <?php
}

You can place this code snippet in the functions.php of your child theme. If you haven’t worked with code snippets or functions.php before please read this: How to use filters

Let me know if it works!