conversions in Google Adwords and Analytics not measured

-- HikaShop version -- : 2.6.4
-- Joomla version -- : 3.6.5
-- PHP version -- : 5.6.29
-- Browser(s) name and version -- : Firefox
-- Error-message(debug-mod must be tuned on) -- : no errors

Using Hikashop Business 2.6.4 with Plugin: HikaShop Google Dynamic Remarketing (conversion tracking) and HikaShop Google Analytics Plugin. I want to see in Adwords 'converted clicks' and 'conversion ratio'
Now they are 0. What do I have to do to get this values?
The shop-owner has only to check 'confirmed' for each order, so I can see the orders in HikaShop and in Google Analytics. I can not see if it was from an Adwords campaign. I would like to see if it was an order through Adwords.

Were there any patches made to the 2.6.4 Google eCommerce plugin after 2.6.4 was released? We are using it on a client site and experiencing some issues. Wondering if there is a more up to date version available than what we have on file.

Excellent. Thanks, we've installed the latest from 3.0 and will see how it goes.