How does cart rules work?
A cart rule applies on a subscription to the first recurrence or all recurrences: it is not possible to decide on its duration of application, for example 3 recurrences. This is a limitation of payment services.
If I make 1 month free for any new subscriber can I still offer cart rules to new users?
It is not possible to mix both a trial period and a cart rule, since the payment gateway do not offer the management of multiple discounts. You must choose between one or the other.
What does restriction mean when creating a cart rule?
The restriction requires the presence of the product in the basket for the cart rule to apply. A restriction will prevent the cart rule from being valid for the purchase of a particular subscription or product. In addition, a cart rule applies to the total of the basket, and not on a single product.