title: Open a page with unique url for each subscriber in wordpress plugin?
body: <p>I'm relatively new in WP plugins and this is kind a blocker for me, sorry if it's too simple.</p>
  
  <p>I have a plugin with admin panel for control of some values in a form.
  I would like to show the form hosted on a page with a unique url (hashed) for each subscriber, so: domainname/REFER_SLUG?uniquekey</p>
  
  <p>For example when user click on some link on the site.</p>
  
  <p>What's the easiest way to do it?</p>