A website is currently being protected by a security service due to potential online attacks. The action that triggered the block was your recent interaction with the site, which may have included submitting suspicious content or entering malicious data.
To resolve the issue, you can send an email to the site owner providing details of what happened when the page loaded, including the Cloudflare Ray ID displayed at the bottom of the page. This will help the site owner understand what triggered the security measure and take necessary steps to improve their website’s security.
Source: https://www.physiciansweekly.com/majority-of-patients-with-lyme-disease-do-not-follow-up-with-clinician