Hi @heurteph-ei , @Frederic_Forster ,
Just to be clear, the issue I pointed out in the screenshots earlier is just an issue with the data shown in the online demo. There are no issues in Matomo that would cause this - what the issue is effectively would be the same as incorrectly tracking product and order revenue to Matomo (at the end of the day, Matomo can only be as accurate as the data you feed it) - this os of course if you’re only applying discount to the order only.
If you’re having a similar issue, then it means that something may be wrong with your tracking code implementation on your website.
Otherwise if it is discount related, I would say that a quick solution may be to apply the discount to individual items in order to accurately track product and order revenue.