Not working with WP 4.7 and WC 2.6

Can anyone make this plugin work with WordPress 4.7 and WooCommerce 2.6.0? On product pages (category pages too) there is a JS code inserted correctly but no trackEcommerceOrder code on thank you page. Once (I don’t know how) I made it appear in source code, but then I turned off WP-Piwik and everything disappeared. Now it doesn’t matter if I have WP-Piwik turned on or not – there is no trackEcommerceOrder JS code on thank you page. Please, fix this or tell me how to fix this.