Unable to get the cluster to accept inbound traffic

[JsprSt]

Hi!
I've created a cluster using the tool and from the CLI side, everything works as excepted.

I have used k3s on multiple occasions in the past so I followed the instructions not as strict on the first attempt (I didn't deploy the hello-world example and directly configured my own domain with dns etc.)

On that attempt it was impossible for me to get the setup to work correctly with the load balancer etc. It was impossible to access any service running inside over the load balancer (DNS configured correctly)
I eventually gave up debugging the system and decided to try again, now STRICTLY following the tutorial.
I did everything exactly as described here.
The only thing I did different was to add my domain to the ingress-nginx-annotations.yaml file.
I then added an A DNS entry to the domain with the subdomain targeting the load balancers address.
Im again sitting here after about 4 hours of debugging without success.
Everything works cluster wise. When using a tunnel to access the services, everything works as excepted. The load balancer still only responds with 400 bad request.

I'd love to give more detail but I found it not necessary since I double checked I did everything correct about 10 times now.

I have hosted k3s on Hetzner cloud before and I enjoyed it. To make things easier for myself I wanted to use this tool but I can't get it to run. At this point im loosing my mind - so im thankful for any kind of help <3

Thanks a lot in advance and have a great day.

Edit:
I once again tried it. This time without providing a hostname to the load-balancer. Theres still something off. The load balancer still leaves me with 400 Bad Request. Could anyone maybe give me a hint where I should look into?

[JsprSt]

So the fix was indeed to make sure the config map for the nginx-ingress-controller is deployed properly.
I have absolutely no idea how that problem snuck in but I probably snuck in a typo there somewhere. I have still no clue how that could've happened.