@tina do you see any reason why this is happening ?

Hi @Programiz , 

Happy to help here! Is this issue still occurring?

If so can you please send over some debug logs? 

You can enable debug logs by following this guide. After they're enabled you'll see logs like this in the console:
 

oPurchases] - DEBUG: No cached entitlements, fetching
rPurchases] - DEBUG: GET /v1/subscribers/<APP_USER_ID> 200
rPurchases] - DEBUG: Purchaser info updated, sending to delegate

Please ensure the debug logs include the entire app life-cycle, including the messages printed during initialization of the SDK. The more information you include here, the better we'll be able to help.

Let me know if you have any questions!

I have the same issue. For my monthly package, Purchases.purchasePackage() does not open iOS purchase modal in sandbox and instantly returns. Works fine with Annually.

It’s the same piece of code with different products from getOfferings. 

If it failed instead of returning successfully, it would be great we could just handle the failure.

Maybe the reason is why is because after fifth renewal it is opt-out. it is handled by Apple connect.Here it is explained more broadly: https://stackoverflow.com/a/12027860

This is still an ongoing issue for us, using RevenueCat SDK 4.0.0 in Unity 2021.3.8. After a few repurchases, it becomes impossible to repurchase that subscription product on iOS.

Those purchases are in sandbox. But it is impossible for us to determine if this is a sandbox-only issue. We never had a similar issue with in our current implementation of Unity IAP, so anwsering this is actually an important issue for us as we are currently trying to assess if the SDK is stable enough to launch with. 

PurchaseProduct conclude with no errors, but the CustomerInfo does not include any active Entitlement or any ActiveSubscription.

Here is a sample of the logs from one of those failed purchase:

2022-09-01 12:06:22.334218-0400 AppNamep18946:594262] 4Purchases] - DEBUG: ℹ️ Skipping products request because products were already cached. products: p"com.company.app.subscription_one_month_01"]
2022-09-01 12:06:22.337390-0400 AppName018946:593336] 6Purchases] - INFO: 💰 Purchasing Product 'com.company.app.subscription_one_month_01'
2022-09-01 12:06:22.340405-0400 AppName-18946:593336] 8Purchases] - DEBUG: ℹ️ PaymentQueue updatedTransaction: com.company.app.subscription_one_month_01 XXXXXXXXXXXXXXX1 XXXXXXXXXXXXXXX2 1
2022-09-01 12:06:22.341816-0400 AppName118946:593336] mPurchases] - DEBUG: ℹ️ Force refreshing the receipt to get latest transactions from Apple.

2022-09-01 12:06:23.055246-0400 AppName318946:594262] pPurchases] - DEBUG: ℹ️ Loaded receipt from url file:///private/var/mobile/Containers/Data/Application/XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX/StoreKit/sandboxReceipt
2022-09-01 12:06:23.055986-0400 AppName018946:594262] 0Purchases] - DEBUG: ℹ️ Skipping products request because products were already cached. products: r"com.company.app.subscription_one_month_01"]
2022-09-01 12:06:23.056637-0400 AppName 18946:593336] 7Purchases] - DEBUG: ℹ️ Found 0 unsynced attributes for App User ID: XXXXXXXXXXXXXXXX
2022-09-01 12:06:23.088693-0400 AppName918946:594262] 8Purchases] - DEBUG: ℹ️ PostReceiptDataOperation: Started
2022-09-01 12:06:23.089212-0400 AppName218946:594262] 2Purchases] - DEBUG: ℹ️ There are no requests currently running, starting request POST receipts
2022-09-01 12:06:23.097133-0400 AppName/18946:594262] :Purchases] - DEBUG: ℹ️ API request started: POST /v1/receipts
2022-09-01 12:06:25.050778-0400 AppName<18946:594262] 1Purchases] - DEBUG: ℹ️ API request completed: POST /v1/receipts 200
2022-09-01 12:06:25.066365-0400 AppName 18946:594262] 0Purchases] - DEBUG: ℹ️ PostReceiptDataOperation: Finished
2022-09-01 12:06:25.066750-0400 AppNameF18946:594262] 0Purchases] - DEBUG: ℹ️ Serial request done: POST receipts, 0 requests left in the queue
2022-09-01 12:06:25.071697-0400 AppNamei18946:593336]  Purchases] - INFO: 😻💰 Purchased product - 'com.company.app.subscription_one_month_01'
2022-09-01 12:06:25.073391-0400 AppNamet18946:593336] 0Purchases] - INFO: 💰 Finishing transaction com.company.app.subscription_one_month_01 XXXXXXXXXXXXXXX1 (XXXXXXXXXXXXXXX2)

We’ve had a few reports of this and it seems to be an issue with StoreKit 1. Upgrading to using an SDK version that allows you to use StoreKit 2 under the hood should help. 

The latest version of our iOS, Flutter, React-Native and Unity SDKs support StoreKit 2, by passing an extra parameter when configuring. 

Could you give it a shot? Let me know if you need instructions for any particular SDK. 

If only that worked...sigh.   Added StoreKit 2 if available.  Within sandbox, I am unable to re-purchase a cancelled subscription within the app after successfully purchasing it the first time.  However, I can go into iOS and re-subscribe under my sandbox account in Settings/App Store/sandbox account/manage/subscriptions.

Has anyone tried using a new sandboxed account on a device instead of relying on StoreKit just to help narrow down some of the issues encountered?

I know it’s not an ideal method for testing, but it could help narrow down some of the problems encountered. I’m using Unity > Xcode > RevenueCat, and I’ve found that new sandboxed accounts on devices work well for testing.

Let me know if this helps or if you’ve found other solutions!

On a side note: I also thought this was an interesting article that shows you how to control the subscription renewal rate for sandboxed testing.

The subscription renewal rate is the speed at which subscriptions renew for each tester in sandbox. The subscription renewal rate also determines the length of Billing Retry and Billing Grace Period for those testers.

You can change a tester’s subscription renewal rate at any time in their iOS Sandbox Account Settings or by following these steps in App Store Connect:

1. From Users and Access, click Sandbox to view Sandbox accounts.

2. Click the Sandbox account you want to modify.

3. In the dialog that appears under Subscription Renewal Rate, select a renewal speed and click Save.

   By default, accounts are set to a speed equalization of 1 month = 5 minutes. You can slow down or speed up the renewal period using the options below. Subscriptions automatically renew up to 12 times before auto-renewal turns off on the thirteenth renewal attempt. Note that the speed of renewal in sandbox depends on the length of the subscription.