Thank you.
And what can be that on pure wordpress and woocommerce put your plugin, in the message “product in cart, under the name of the product” copied all your tips with examples, and they do not display anything (except the total amount of the cart)
It looks like “you can do this and that, here is an example: and here is an empty space. You can also do this and that, here is an example : and here is empty again).