title: iOS sandbox IAP fails in 10.3
body: <p>I have some IAP code running since iOS 9.0 w/o problems. Today I updated to 10.3 and I am not anymore able to test IAPs in the sandbox environment. I now use Xcode 8.3. Specifically what happens is this:</p>
  
  <ul>
  <li>the list of products gets loaded (so connectivity is OK)</li>
  <li>the product gets added to the payment queue</li>
  <li>GUI asks for appleID password</li>
  <li>when entered I get .failed in the from the paymentQueue</li>
  <li>then the GUI pops up the "Accept IAP purchase" (env. sandbox)</li>
  <li>if I say OK I get "no connection to iTunes Store" </li>
  </ul>
  
  <p>Does anybody have similar problems with 10.3 ?</p>
  
  <p>Please note that my same code is running without problems since several months now with earlier iOS versions and that I definitely HAVE internet connection on the test device.</p>
  
  <p>Thanks</p>