When a subscription is created, the following logics apply:
All issues with subscribe purchase type will be unlocked, regardless of the subscription start date.
Issues with paid purchase type will be unlocked with the conditions : (a) for any new issues published later-on, and (b) issues that were published in the same month in which the reader subscribed (e.g. a paid issue published on March 1st will be unlocked if a reader subscribes on March 30th).
If no issues are unlocked by (1) and (2), the last published paid issue will be unlocked (even if before subscription start date). This is to make sure a new subscriber gets at least one issue unlocked immediately.
EXAMPLE 1:
A publisher has the following issues:
Issue 1: Paid issue published January 1st 2018
Issue 2: Paid issue published February 1st 2018
Issue 3: Paid issue published March 1st 2018
A reader subscribes on March 5th:
Issue 3 will be unlocked, as it is within the same month as the reader subscribed (subscription start date).
EXAMPLE 2:
A publisher has the following issues:
Issue 1: Paid issue published January 1st 2018
Issue 2: Paid issue published February 1st 2018
Issue 3: Paid issue published March 1st 2018
A reader subscribes on April 1st: Issue 3 will be unlocked, as it is the most recent paid issue before subscription start date.
EXAMPLE 3:
A publisher has the following issues:
Issue 1: Subscribe issue published January 1st 2018
Issue 2: Paid issue published February 1st 2018
Issue 3: Paid issue published March 1st 2018
A reader subscribes on April 1st: only Issue 1 will be unlocked, as it is a "Subscribe" issue.
PS : The subscription conditions above are not static. We will change it once we have an update.