The Please unblock challenges.cloudflare.com to proceed message means that Cloudflare is having issues.
You might see messages like this on websites you own/manage:
And this message on websites you want to visit/use:
You can check if Cloudflare’s Global Network is experiencing issues at https://www.cloudflarestatus.com/
If Cloudflare is experiencing issues, you generally have two options:
- Block/remove any Cloudflare tools from your website/services
- Wait until Cloudflare comes back up again
I generally lean to Option 2, but this is a healthy reminder to review if Option 1 should be higher up your to do list.