Nikita Ivashchenko

Hi, maybe it's a bit late, but I've fixed it by doing this: 1. Removed `implementation files('jars/in-app-purchasing-2.0.76.jar')` 2. Added `implementation 'com.amazon.device:amazon-appstore-sdk:3.+'` Official sdk docs: https://developer.amazon.com/docs/appstore-sdk/integrate-appstore-sdk.html