Resolved Testing a purchase on Google results in an order cancellation

On Android、
Using Unity 2020.3.38
and Unity In App Purchasing 4.5.2.
Language:Japanese
Model:SC-02K

Issue occured while purchasing a NonConsumable on the Play Console's closed test application,
executing storeController.InitiatePurchase();

Google Play's purchase dialogue shows up as "Test card, 1-click purchase".
After this, we opened the device's setting screen and signed out of the application.

We quickly returned to the application, and pressed 1-click purchase

Following that, the following completion message was displayed:
Processing.
Payment complete.

And an email with the following headline was recieved:
Recieved order for「Test: Google Play」

But about 5 minutes later we recieved an email reading:
cancellation details for「Test: Google Play」

The application called IStoreListener.ProcessPurchase(),
and checking GooglePurchaseState.Purchased shows the item was recieved,
and in ProcessPurchase(), PurchaseProcessingResult.Complete is being returned.

To summarize, currently the item is being recieved, while a few minutes later the order is being canceled,
and until UnityPurchasing.Initialize() is called again the item can be freely used.

Is there a way to prevent this cancellation
Or alternatively, is there a way to detect a sign out?

 

Thank you aVerrecchia

>Does this issue only happen in testing environment ?
Since it is an application before release, it is confirmed only in the test environment.
Is it possible that it doesn't occur in a release environment?

>Can you reproduce the issue on apple ?
Apple cannot reproduce the problem.

>By sign out did you mean : a user disconnection from the playstore / appstore ?
yes. It will be the operation of deleting the account from the play store app.

Why is the order canceled even though I am returning PurchaseProcessingResult.Complete?

 

Non-test card purchases had no issues.

Thank you