I am trying to purchase using a beta tester but i am getting this error.
This is an error that shows in google play window, after passing initial validations and after the user press subscribe button, so i guess it is not an code or configuration error.
Anyway i checked this link https://stackoverflow.com/a/22469253/2700303 and also downloaded the app from the store.
I check the "Learn more" link that comes with the error but nothing on that troubleshooting page helped. The account used as a valid and active pay method. I am running on a simulator, but google play comes with it for a reason, so i discard that also. The rest of the suggestions say to use other device. My simulator is running API 28 so should be good enough.