An existing connection was forcibly closed by the remote host

hello ~

There is a failure regarding the free CDN service of CLOUDFLARE, and I need help to solve it. I have a VPS server used to set up VMESS service. Without modifying any configuration, I applied the CDN service to the domain name bound to the IP, but the connection failed with the feedback result “An existing connection was forcibly closed by the remote host.” I tried to connect directly to the IP using VMESS service and it was normal, but only the connection with CDN applied will cause an error. I wonder if it is due to any automatic changes in my CLOUDFLARE settings or non-compliance with new rules, or other reasons causing this problem?

Thanks lot

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