title: How to get access to twitter ads api?
body: <p>after a lot of back and forth with the Twitter documentation I am now able to authenticate with OAuth 1.0 and make request behalf on the user who sign-ined and accepted my app to preform changes / retrieve data. 
  Now, I'm trying to make requests to the Twitter Ads API.
  This is the error I get: </p>
  
  <pre><code>{"errors":[{"code":"UNAUTHORIZED_CLIENT_APPLICATION","message":"The client application making this request does not have access to this API"}],"request":{"params":{}}}
  </code></pre>
  
  <p>As it seems, there is a need of another app registration. <a href="https://dev.twitter.com/form/ads-api-access-developer" rel="noreferrer">I registered it</a> with my app id, assuming the 'developer' stage is the fit for me. I'm trying to retrieve analytics, e.g., <a href="https://dev.twitter.com/ads/reference/get/stats/accounts/%3Aaccount_id" rel="noreferrer">retrieve campaigns</a> for the user who accepted it.</p>
  
  <p>After registration the Ads App Form, the error stays the same. The docs don't specify if there is a need for a special implementation for the ads-api. Also, the Ads App I opened isn't mentioned anywhere, nor in my <a href="https://apps.twitter.com/" rel="noreferrer">twitter apps</a>.</p>
  
  <p>Am I missing something? 
  Thanks before.</p>