Trying to purchase in React Native Android fails. Responds storeProductNotAvailable

I'm using the Adapty paywall builder to create a paywall. The paywall shows the correct subscription information. But when I try to subscribe it gives me the following error.

Error: #5 (storeProductNotAvailable): Play Market request failed on purchases updated: responseCode=4

I have uploaded an app to internal testing in Android. Used a device I log in with a license test user with Play Store. But it doesn't work.

react-native-adapty: 2.9.0

What I'm doing wrong?