This is not a developer question, but a user question. Many sites has the Cloudflare Challenge widget embedded with login process, The Cloudflare Challenges widget keeps looping on verifying, (but challeges works well on dash.cloudflare.com), and the issue started a month ago, I am using Firefox109.0b3(32-bit). and I am in China.
I was able to resolve this issue by disabling my Firefox browser extensions. For my case it was JavaScript Error Notifier exception that was the reason. I’ve seen other people reporting different extensions.