Cloudflare captcha pages when IPv6 is enabled

Hi @MarionRavenFan, I’m sorry for the issue you’re facing. That 1020 error is presented by the site owner. In looking into the details around the issue your’re hitting, it seems the IPv6 address you’re assigned is triggering the challenge, not IPv6 in general, just that address.

Quick Fix idea 8, 9 and 13 in this tip may be helpful,Community Tip - Best Practices For Captcha Challenges.