iTunes Connect: it is not eligible for the marketing opt-in incentive?

Question

I use auto-renewable iap in my app, but recently i received a mail from iTunes Connect that i don't really understand.

This is a courtesy notice to inform you that although your recently submitted app, xxxxx(app name), includes auto-renewable In-App Purchase subscriptions, it is not eligible for the marketing opt-in incentive.

As a result, the marketing opt-in incentive option will be disabled in iTunes Connect and you will not be able to offer free extensions of auto-renewable In-App Purchase subscriptions in exchange for the right to send marketing materials.

I set the auto-renewable IAP period 1 month and 7 Days for free, does this mean 7 Days free will be removed or what will have effect on auto-renewable IAP?

Thanks in advance.

Answer 1

In the doc here they say:

Marketing Incentive Duration

The length of an auto-renewable subscription extension if customers choose to opt-in to share contact information. This property is only available to Magazines & Newspapers developers who have implemented Newsstand Kit.