Business Web Application firewall problems with setup

[Wyrm]

I have opnsense business on DEC850 with installed plugin os-OPNWAF
I tried to setup by guide on documentation pages.
I have problem that after enabling and setting all I do not know if it is working.
I do not see anything in logs. When I try to send malformed url it just refresh web and sends me to home page of my app.
I have this setup:
DEC850 is firewall with Zenarmor and there is DMZ network where is machine on which is my web app using port 30000
I have routed public IP directly on DEC850 and also my own SSL certificates used in webserver of that app (NOT LETSENCRYPT).
Certificates are also imported on DEC850
I am using NAT to forward traffic from 443 to 30000 and HAIRPIN NAT to have local network to reach my app with its domain name.
I have specific domain name set on DNS records to my dedicated public ip for that app I have on DEC850
How I should setup all if I have that NAT of port ?
Could anybody help me?
Thanks