Hello 1st post here. I implemented Piwik Core free and it works fine with Wordpress. I do not have ecommerce report though I activated them. is there a specific tag to add ? dimension to set up somewhere ? I looked at Dimensions and Metrics in the Parameters section but did not find and I have little knowledge on how to use and setup dimensions.
thanks
Hi @antoinegay,
Do you mean that you don’t see the Ecommerce reports in Analytics? If so, please have a look at this article - Ecommerce reports | Piwik PRO help center
If you mean that you don’t see any data in Ecommerce reports, you need to make sure to set up Ecommerce tags to track the data. Please have a look at this article - Set up ecommerce tracking | Piwik PRO help center
Please let me know if you have any questions.
Have a great day! 
I’ve set up both and get no data. Using GTM and standard GA4 events. Confirmed firing in GTM Preview, but nothing in Piwik.