Order forms in most EU countries have some special requirements to follow GDPR and online checkout rules.
In the Opt-in checkbox on the checkout form section, the default is the box checked, should you uncheck this when someone purchases a product from you they will not be automatically be added to your mailing list, they will need to check this box.
We will add the total amount on the order summary section in the checkout page including all future installments and order bumps included in the order: