title: Recaptcha not compatible with IE9?
body: <p>I'm trying to build a website working with IE9 and I must use a captcha to prevent scraping. The <a href="https://support.google.com/recaptcha#6223828" rel="nofollow noreferrer">official recaptcha documentation</a> is telling it should work with IE 10/9/8.
  When I try to load the recaptcha v2 with browserstack, I get the following message :</p>
  
  <pre><code>Please upgrade to a supported browser to get a reCAPTCHA challenge
  </code></pre>
  
  <p>If I try to load <a href="https://www.google.com/recaptcha/api2/demo" rel="nofollow noreferrer">recaptcha's demo</a> with Brave using IE9's useragent, I'm getting the same message, that's why I assume google is blocking recaptcha based on the useragent, but why is the documentation saying how to make it work on IE ?</p>
  
  <p>Any informations on this ?</p>
  
  <p>Thanks.</p>