Running the playstorecrawler with the latest playstore APK (com.android.vending, ver=7.1.12.I-all [0] [PR], vercode=80711200 - link ) causes "message.payload.deliveryResponse.appDeliveryData.downloadAuthCookie" googleplay.py:327 to be None.
This propagates from googleplay.py:208 where, "message.payload.deliveryResponse.status" == 2
This code still works as expected when running against older playstore versions (com.android.vending, ver=7.0.18.H-all [0], vercode=80701800 - link )
cc: @therealssj