<p>As @whuber notes, you need to register and merge your accounts.  Here is my boilerplate text that provides the relevant information:  </p>

<blockquote>
  <p>Please register &amp;/or merge your accounts (you can find information on how to do this in the <strong>My Account</strong> section of our <a href="https://stats.stackexchange.com/help">help center</a>), then you will be able to edit &amp; comment on your own question. </p>
</blockquote>
