添加了代理，无法访问网址，但是通过ip，是能访问成功的

Website, Application, Performance DNS & Network
2

I received JS challenge at first visit:

slika
slika840×537 12.2 KB

Later I got error 521:

slika
slika1012×810 37.7 KB

May I ask what troubleshooting steps have you tried already for 521 error? :thinking:

Does DNS record contain the correct origin host/server IP address? :thinking:

Are Cloudflare IP addresses allowed to connect to your Website? No firewall running?

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