Hi,
1. You want to go in the menu Display>Views. There, search for the pdf_layout / invoice.php (or one of the other layouts of pdf_layout based on what you selected in the "layout" setting of the PDF invoice plugin). Edit it, and search for the line:
$addresses = array('billing_address','shipping_address');Replace it by:
$addresses = array('billing_address');and the shipping address will be removed from the PDF files generated by the plugin.
2. The invoice PDF file will be included automatically in the email sent to the customer once the plugin is installed and enabled.
One reason it would not be the case would be if the "Access level" of the plugin would be changed from something else than public, or if the "Statuses for email attachment" setting would be filled with incorrect statuses (you can leave it empty).