Hello, I am planning to publish my app on the amazon app store, and I do have one microtransaction in the game. And the question is, if the microtransaction after I published the game still works for amazon devices. Maybe it wouldnt be compatible or something.
Amazon is one of the stores that we support. You would want to explicitly choose the Amazon store. From the Window menu in the Unity Editor, choose Unity IAP/Android/Target Amazon. Then create your build that you could publish on Amazon. There is more information here Unity - Manual: Configuration for the Amazon Appstore