Amazon Product.receipt always NULL when testing.

So I've recently integrated Unity IAP (version 1.20.0) into my mobile game projects (all using Unity 5.6.6f2) in place of our older plugins. The only blocking issue I've encountered is that regardless of how I test Amazon android builds I never seem to have valid receipt data (Product.receipt is always NULL).

Code (CSharp):

1. Product product = storeController.products.WithID( productId );
2.  
3. if( product.receipt == null )
4.     Debug.LogWarning( "The product provided does not have receipt data: " + productId );
5. else
6. {
7. // ...set up the SubscriptionManager.
8. }

I've used both the Amazon App Tester app as well as posting a build to Amazon's live test system. The purchase appears to complete successfully. I'm wondering if this is to be expected with builds that aren't live (available for release and signed by the Amazon Appstore)? This issue is particular significant for me as our main motivation for integrating Unity IAP was to gain support for subscriptions. And per the IAP demo code, it appears that valid receipt data is required in order to use the SubscriptionManager class. Any insight would be appreciated!

 

I will check with the team here

 

Much appreciated!

 

Any new insight on the issue?​

 

Can you confirm that you are testing with a Subscription that is not expired? when we tested Amazon using the App tester app, if we buy a subscription product, we can always get a valid receipt if this product is not expired.Perhaps you are purchasing a consumable product, and it is suppose to have no receipt on next app initialization. Also, when you say it appears to complete successfully, can you confirm on the users account?

 

Hi Jeff, I'm Noah's partner. The subscription is not expired and is set up correctly as a subscription (not consumable). I can also confirm the the sub completed successfully and is in my user account/Appstore Library as an active subscription that expires in the future.

Can you confirm which SKU/ID we should be using for purchasing as well as getting back receipt data? Should we only be using the 'Subscription Period' sku or only the parent subscription sku?

 

You would want the parent subscription sku. We are continuing to investigate here. If you continue to have issues with this, it may be an issue on our side that we would need to address. I'll try to keep this thread updated with our progress.

 

Found more information here: https://answers.unity.com/questions/1367978/unity-iap-amazon-subscriptions.html

So we have been using the child ID for purchasing and getting receipt data. Are you saying we should use the parent for both? Or should we purchase and get sub meta data with the child sku and reciept data with the parent sku (as the link above suggests)?

 

The link looks to be correct.

 

I'll give it a test. Thanks for the info.

 

It looks like the states come back correct using the parent sku, but the dates are still invalid/null.

 

Does that mean Unity IAP does not work with subscriptions on Amazon?

 

The release notes below suggest Amazon subscriptions are fully supported, unless I'm missing something. Is this information not correct?

An update is available for Unity IAP, v1.20.0.

Additional support for subscription:

• This version now supports upgrading / downgrading subscription tiers for Google Play store.
• We now bring feature parity of subscription feature to Amazon store, providing extended information about IAP subscription products