ISP manager (ispmgr) crashed, 404 error,?

Question

Nginx

The topic is no longer relevant, the issue is closed, everything is resolved, you need to read the manuals more and first understand what you are working with

Answer 1

I checked this, and apache is also screwing something up
sudo netstat -luntp|grep 80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 3 131/nginx
tcp 0 0 MYAYPI:8080 0.0.0.0:* LISTEN 3 120 /httpd
netstat
tcp 0 0 MYSITE:1500 0.0.0.0:* LISTEN 1883/ihttpd