I have installed Piwik for an ecommerce site in Prestashop and the Piwik doesn’t pick up any traffic data, I still have zero visitors - although I know a few friends of mine have visited the pages since I installed Piwik. Could I have entered a wrong Database Server (MySQL) or etc - I used the same one that was used for the shop itself.
A few minutes after I wrote this question, I went through the ‘Settings’ and found something that says I need to install:
Copy and paste the following code in all the pages you want to track with Piwik.
In most websites, blogs, CMS, etc. you can edit your website templates and add this code in a “footer” file.