Why In-App purchase sandbox always ask “Verification Required”?

Question

I have signed out from the store in device settings. I entered user credentials only in my App. I have set up a brand new (actually around 4 times) test user.

Why th

Answer 1

In addition of the above answers, note the below points also :-

1) Uninstall your app from the device.

2) Create a new test account on iTunes Connect and verify its email address. Never add any payment information for this test account, not online, not on iTunes, not on your device. Doing so might invalidate your test account (and trigger the "verify payment info" vicious cycle.) Also never use this test account out of the Sandbox.

3) Log-out from the App Store on your device. DO NOT log back in the App Store via Settings > iTunes & App Stores on your device. You will be asked your login credentials from your app later (see points 5-6)

4) Re-install your app.

5) Attempt an in-app purchase. You should now be prompted to enter both your username and password (as you logged out from the App Store)

6) Type in your username and password: you should not see the dreadful "Verification Required: before you can make purchases, you must verify your payment info" message and the purchase should be successful.