It has happened since September.
Using connection from Hinet can not access into program of my website and got 520 error.
However, when I contact site provider, they said maybe problem is made by cloudflare.
When I temporarily disabled cloudflare service, it seems like got normally.
So how can I know what happened inside my cloudflare service?
I use free plan and can not find how to open support ticket.
Here is output data from my website.
Ray ID: 530328abef28af1b