title: How to config the APS at Developer website
body: <p>When  I build my Demo app ,the General page shows the error. 
  I am trying to config the APS at Developer website,but I can't find the Certificates Page.I just want to run the demo on my own iPhone for test.
  Should I Pay 99$ for my account?
  <a href="https://i.stack.imgur.com/uQCjQ.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/uQCjQ.jpg" alt="enter image description here"></a></p>