How to track product events using ngx-matomo/tracker

General questions
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1

I have been able to track addEcommerceItem and trackEcommerceOrder events but in the matomo dashboard, in the Ecommerce/Products table, the column Product Revenue is allways 0€. There’s something I am doing wrong?
In my web, when I add a Storage product to the cart, I am doing this calls:

this.tracker.setEcommerceView(`Center-1/Stroage-1`, `Trastero 1`, "Storage");
this.tracker.addEcommerceItem(`Center-1/Stroage-1`, `Trastero 1`, "Storage", undefined, 1);
this.tracker.trackPageView();

The to confirm the order:
this.tracker.trackEcommerceOrder(111111111, 100, 100, undefined, 0, 0);