Add to cart event – not sending from serveur

Hello,

I have set up the plugin and receive server-side events for the following events : view content, Initiate Checkout, Transaction.
However, no server side event is sent for the AddToCart event.

I am using a wordpress website with a divi theme and woocommerce to handle the e-commerce.
Where could the problem come from ?

Thanks a lot in advance for your help,