title: iOS in-app purchases sandbox environment - verification required
body: <p>I cant test my in-app purchases because I am always getting this error message: Verification Required: before you can make purchases, you must verify your payment info [Environment: Sandbox]. Two buttons are presented in UIAlertView: cancel and continue. If I tap continue I am redirected to Safari and I follow verification steps, but in my app in this case I always get "Cancelled transaction" event.</p>
  
  <p>I am using the test accounts created in iTunes Connect. I tried creating several accounts but always the same message occurs. What to do?</p>
  
  <p>Any hints?</p>