Script exits when Cloudflare blocks too many attempts

[MSDNAndi]

Script exits without recovering or retrying when Cloudflare blocks too many requests... see copy/paste of error below (I edit my IP address and the Cloudflare ID in the response).

There have been too many recent activation attempts from this account or Internet address. Please wait and try your product code again later.
Redeemed Yuppie Psycho to go away (takes an hour after first key insert)
Owlboy

<title>Access denied | www.humblebundle.com used Cloudflare to restrict access</title> <script defer src="https://api.radar.cloudflare.com/beacon.js"></script>

Please enable cookies.

Error 1020

Ray ID: 5c53d3c3cc90f376 • 2021-12-31 13:24:16 UTC

Access denied

  <section class="w-240 lg:w-full mx-auto mb-8 lg:px-8">
      <div id="what-happened-section" class="w-1/2 md:w-full">
        <h2 class="text-3xl leading-tight font-normal mb-4 text-black-dark antialiased" data-translate="what_happened">What happened?</h2>
        <p>This website is using a security service to protect itself from online attacks.</p>

      </div>


  </section>

  <div class="cf-error-footer cf-wrapper w-240 lg:w-full py-10 sm:py-4 sm:px-8 mx-auto text-center sm:text-left border-solid border-0 border-t border-gray-300">

Cloudflare Ray ID: 6c63d3c3cc90f375 • Your IP: 123.123.123.123 • Performance & security by Cloudflare

</div><!-- /#cf-error-details -->

<script type="text/javascript"> window._cf_translation = {}; </script>

Press ENTER to close terminal

[MSDNAndi]

For context, I had hundreds of unrevealed keys, I also have a symmetric gigabit tier connection.
May need something to limit the rate you are hitting HumbleBundle with, and retries in some more places when hitting potentially transient errors.