Hello, recently i have problem with my droplet.

1. I see my server graph is normal CPU, BW, Disk all is normal
2. I still can access cPanel and do anything without problem

but my server is down. i access with IP address, it return 522 but after several minutes, all goes normal.

i think cloudflare is not the problem, because when i access the ip itself, it don’t show anything and got error.

is there any problem with my server or service, or how to know which one cause the problem