Regex path matching for Ingress-Nginx - nginx

Question

I am working with ingress-nginx in kubernetes to set up a server.
The issue is that the paths are not routing at all and I get a 404 error from the nginx server on any request I make.
Below is my code for ingress:
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-srv
annotations:
kubernetes.io/ingress.class: nginx
nginx.ingress.kubernetes.io/use-regex: "true"
spec:
# defaultBackend:
# service:
# name: auth-srv
# port:
# number: 3000
rules:
- host: app.dev
- http:
paths:
- pathType: Prefix
path: /api/auth/?(.*)
backend:
service:
name: auth-srv
port:
number: 3000
- path: /api/coms/?(.*)
pathType: Prefix
backend:
service:
name: coms-srv
port:
number: 3000
If I uncomment the default backend service I get a response but as soon as I remove it I get the 404 nginx error. So I know its connecting to the services I set.
I don't know where I'm going wrong how to go about fixing this as I'm copying straight from the docs. Any help or insight would be great. Thank you in advance!
Edit 1: I removed the regex from the path and commented out the /api/auth path so no requests should be going to the auth-srv. For some reason, all requests route to the auth-srv even though there is no mapping to it. NOTE: Both the auth and coms pods/services are running in the background, just ingress-nginx still isn't routing properly.

Answer 1

So the reason why this wasn't routing properly was because of the:
- host: app.dev
- http:
The "-" in front of the "http" made the controller think it was its own ruleset so the following routes had a host of "*". After I Removed the "-" in front of the "http", the rules were set to the proper host of app.dev and it started routing accordingly.
Thank you for your help everyone! What a long day it has been :')