[URGENT] In App Purchase. Users charged but get OnPurchaseFailed event

Hi, I'm unity developer. In the last update my game encountered a fatal error. The player is charged, but I get the OnPurchaseFailed event. before release I tested on test flight, and everything is fine. but when i release our users have this problem.

I tried to rollback to the previous version, but when I released it to users, I also got this fatal error.

I don't know what the cause is. please help.

Unity Version 2020.3.41f1

Unity IAP version 4.5.2

Easy Mobile pro 2.19.0

Unity Version 2020.3.27f1 Unity IAP 4.8.0

I have same problem since 20 hours ago when I update my unity app.

Same problem with Unity 2018.4.31f1 Unity IAP 2.3.0.

After update app I get the OnPurchaseFailed event.

problem solved, I have updated to the latest version of unity In-app purchasing. Unity in-app purchase 4.9.0

[URGENT] In App Purchase. Users charged but get OnPurchaseFailed event
 
 
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