Issues with HAOS with NGINX - potential IP mismatch?

Hi all.

I’ve been reading so much about how to fix the common issue of reverse proxying HAOS with nginx proxy manager.

Apparently I can only upload one image, I find out after spending a while composing this thread.
I’ve screenshotted the whole thread into one image.

You may need to open image in new tab to zoom in and read it.

EDIT :

Nevermind, It was AdGuard getting in the way (It’s also on the same host).