Hi again..
First of all, i'm new to develop project nodejs to server (VPS)... as Title problem, i have difficulty to redirect my sub domain from my ip address (node js project).
I have 2 IP's, Local network and Internet network, both of them i can access, smoothly.
I have done set reverse proxy, below my config.

I'm using PM2 to run my nodejs project.

but, when i access my subdomain, it's redirect to other project of my PHP project.
any one can explain my step has wrong ?
Thanks