Free packages will automatically skip checkout.

If you want to generate invoices for them, still, then you can do that with this snippet.

Use the Code Snippet plugin to add this PHP snippet to your site.

This snippet is only useful on a site using our premium Pricing Manager addon.

/*
 * Force to generate invoice for free package listing.
 */
function gd_snippet_invoice_for_free_package( $skip ) {
	$skip = false;

	return $skip;
}
add_filter( 'geodir_pricing_skip_invoice', 'gd_snippet_invoice_for_free_package', 20, 2 );