Our WooCommerce PDF Invoices and Packing Slips Plugin premium version is currently at 3.5.7 and the basic version is at 2.3.8 and the version you mentioned is 3.10.0, which is not yet released one. Both plugin version does not have any update issue currently.
Are you sure that you are using our WooCommerce PDF Invoices and Packing Slips Plugin?