Thanks Ryan for your answer. We have tried method 2 (trackEvent) and it doesn't work either.

Hi Ryan, No, it does not have an extra space. We have also tried with a custom parameter and not using the default "productPurchasedId" parameter, but it only works with the checkout and not the checkout page.

No, it does not work. If I download the CSV, I have the purchases received, but not what products they are for. Thanks for your help

Nobody help me with this? Thanks 