As the title suggests, I am having trouble purchasing a non-renewable product on my app.

Here is an overview of my current setup:

• Flutter app (with products that can be purchased via app store or play store)
• Web app (with the same products that can be purchased via Stripe)
• Server (acts as the backend, is used for authenticating users on login)

The non-renewable product is specific to each user. In other words, if user A logs on to the app and purchases the product, then any privileges associated with that non-renewable product will be granted to user A. Then, if user A logs out of their account and user B logs on to the app using their own account on the same device, user B should not have access to those privileges.

In order to test the scenario mentioned above on my Flutter app, these are the steps I took:

1. Log on to app using account A
2. Purchase non-renewable product
3. Verify that privileges are granted
4. Log out of app
5. Log on to app using account B
6. Purchase non-renewable product
7. Verify that privileges are granted

However, when I try to purchase the product (step 6), I get the following error:

There is already another active subscriber using the same receipt.

Other bits of info that might be useful:

• The app user ID is set when a user logs in, and is unset when the user logs out of the app.
• The app user ID is tied to the user’s account (it is set to the account’s unique ID)

Attached below are logs of me logging out of account A and then logging on with account B (log0.txt)

and logs of me attempting to purchase the non-renewable product with account B (log1.txt)

Thanks!

Edit: To clarify, this error only occurs on iOS, and not Android