Greetings,
Thank you for asking.
Have you tried clearing your Web browser cache, or accessing via Private window (Incognito mode)?
How about using a different Web browser?
Or at least using a mobile phone and mobile data (4G LTE, cellular), or even using a VPN connection?
Do you use any particular anti-virus software or some kind of an Web browser extension?
Otherwise, kindly see the suggestion from below post:
https://www.reddit.com/r/CloudFlare/comments/oux1pe/captcha_this_challenge_page_was_accidentally/