We are happy owners of your extension, but I think there is a bug on it when using auto-coupon.
Sometimes, customers call us to say that “they did not received the free product”.
After investigations, I found that the label of the coupon is not displayed on the order page. So, the coupon is applied correctly, but I think some user remove it because they do not know what is the line without label.
Click on big button “60 gélules” then “ajouter au panier”.
Once there, an auto coupon is applied for a free product and you can validate order by clicking green button “Valider la commande”.
Then you can see “-0,00€ [Enlever]” with no label before it.
When a coupon is applied manually, the label of the coupon is displayed correctly.
When a coupon is configured to be applied automatically, the label of the coupon do not display and some user are “disturbed” and click on “remove”(I suppose) .
That’s why free product is not set in the bill nor sent to them.
Could you please confirm the bug and then repair it pretty quickly if it is confirmed please ?