title: Cannot edit settings on exisitng approved Classic API application
body: <p>I have recently taken over development of a web application which communicates with paypal to do Adaptive Payments using the paypal Classic API.</p>
  
  <p>I was debugging an issue I found in which paypal disallows all transactions which include a chain-payment.</p>
  
  <p>I logged into developer.paypal.com and navigated through the "Create and Manage Classic API Apps" link to find the old apps management interface.</p>
  
  <p>I see my application in the list, and in the application settings the Chain Payments checkbox is unselected. I guess that is the reason that the transactions which include a chain payment are not allowed to be completed.</p>
  
  <p>My problem is that I cannot edit any of the settings for the application. All of the fields in the form are set to readonly, and if I force the form to submit I get message "This application is not in an editable state".</p>
  
  <p>The app was only submitted and approved in February 2015, so its not like it is that old. Is there a limitation that the application cannot be changed after it is approved? How can I enable chain payment permissions on this existing app? </p>