title: Transaction Success but keep asking for password when download contents
body: <p>I am hosted the contents on itunes connect and testing the IAP in both sandbox and beta-testing environment.</p>
  
  <p>I don't have any issue on sandbox yesterday but it keep asks me to re-enter the password when startDownloads: is called and then failed the download (on both sandbox and beta).</p>
  
  <p>Anyone knows how to resolve it?</p>
  
  <p>The process:
  - paymentQueue addPayment: to purchase product</p>
  
  <ul>
  <li><p>prompt for authorize payment</p></li>
  <li><p>user confirm payment</p></li>
  <li><p>payment success, startDownloads</p></li>
  <li><p>ask for password again (may be couple of times)</p></li>
  <li><p>failed download</p></li>
  </ul>
  
  <p>I implement code follow this guide: <a href="http://xinsight.ca/blog/iap-content-download-in-ios6/" rel="nofollow">http://xinsight.ca/blog/iap-content-download-in-ios6/</a></p>
  
  <p>startDownloads: when purchased or restored, then finishTransaction: when download completed</p>