Question: how to change Rancher server URL

I tried to change it over Rancher UI under settings/advanced.
I also checked with:
kubectl get server-url
New value was there.
In front of the cluster is F5. When i go to F5 address i get.
default backend - 404
What i do wrong? What am i missing?
F5 DNS record is the same as server-url

I had to edit name also under LB: Cluster > System > Reources > Workloads - Load Balancing.
It’s all good now.

You’re not updating the ingress rule that routes requests for that URL to the rancher pod, so it’s matching nothing and getting the default ingress backend.