Screaming Frog Seo Spider — 19.5-activation

While the is incredibly generous (crawling up to 500 URLs), any site larger than a small blog will require activation to the paid license .

If you are still stuck, the Screaming Frog support team typically responds within 4 hours during UK business hours. Their knowledge base (support.screamingfrog.co.uk) also has video walkthroughs for version 19.5 activation.