My guess is the problem is one of these two:
- There is a configuration error on your domain. Either the domain is not using Cloudflare’s nameservers (or not using them exclusively - never mix nameservers), or the proxy is not enabled in Cloudflare’s DNS settings.
- Everything is set up correctly, but you still need to wait for DNS caching. It can take up to 72 hours for your computer/network to realize that your domain is now being hosted by Cloudflare and send your traffic to Cloudflare instead of our servers. Basically what is described here: When will my domain name start working
If you want us to check if your domain is set up correctly, please tell us which domain name you’re trying to set up.