App User ID assignation with promo-code

Hi! When a purchase is made with a promo code or through another method in which it is not while the app is active, RevenueCat will have to wait until the receipt is sent from the device when the app is active or until the server notification event with the purchase is received if using the option to track new purchases via server notifications (For example, here is our documentation on doing so through Apple). In terms of the flow with the receipt, the transaction with the promo code will be attributed to the app user ID, whether an anonymous RevenueCat one or a custom ID, from which the receipt came after the SDK posted it to our servers once configured. 

Hi.

I’m not sure I’m understanding you. You’re saying that if a user use one of our promo-code in the Google Play Store, RevenueCat won’t get notified until our app is opened on the same device? How do these two events related? Do-we need to call a specific function?

Right now we have not enabled the server notifications on neither Apple nor Google. So if a user use a promo-code on its phone but then open our app on its tablet (both of the device linked with the same Google account), the user will never get the paid access? If we enable server notifications, then the user doing the same use-case will have access?