Play Store updates/installs app using a different account than the one the user made IAP through

We understand that this issue can be frustrating for both developers and users. The problem seems to be related to the way Google Play Store handles in-app purchases (IAPs) and user accounts.

• One possible solution to this problem is to implement a server-side verification process for IAPs. By verifying IAPs on the server-side, it would not matter which Google account the user is currently logged in with, as long as they are logged in to the app with the same account used to make the purchase. This would also prevent users from sharing IAPs between accounts.

• Another possible solution is to implement a system within the app that allows users to select which Google account to use for purchases. This would require additional development work and may not be feasible for all apps, but it would give users more control over their purchases.

Finally, it's important to communicate clearly with users about how IAPs work and which Google account they should use for purchases. This can be done through in-app messaging or documentation, such as an FAQ section or user manual.

• Overall, the best solution will depend on the specific requirements of the app and the resources available to the development team. It's important to keep in mind that while this issue may lead to negative reviews, it's ultimately up to the developer to find a solution that works for their app and its users. 

As pointed out in a comment, when I refer to multiple accounts I am talking about multiple Google accounts for a single Android User, I am not talking about multiple Android users within the same phone

In that case, the issue may be related to the way Google Play Store handles multiple Google accounts on a single Android device.

One possible solution to this problem is to prompt the user to select the Google account they want to use for in-app purchases when they first launch the app. This can be done through a dialog or a separate screen that allows the user to select from the Google accounts that are associated with their device.

Another option is to allow the user to switch between Google accounts within the app itself. This can be done by providing a settings menu that allows the user to select the Google account they want to use for in-app purchases.

It's important to note that any solution that involves allowing the user to select their Google account for in-app purchases should be clearly communicated to the user through in-app messaging or documentation. This can help prevent confusion and ensure that users are using the correct Google account for their purchases.

We hope this solves your Problem