Did you disable the nodebb-plugin-markdown? This one is responsible for most text parsing including quotes (see this page for syntax).
No. Its enabled.
I'm trying to install NodeBB on https://myip/community.
My current configs are as follows:
First of all your NGINX config is incorrect. You want to access the forum under /community, but are using /forum in it.
This is a simplified version of my NGINX config:
And here my config.json: