In order to access the server UI you have the following options:

1. kubectl port-forward service/{{include "argo-cd.fullname" . }}-server -n {{ .Release.Namespace }} 8080:443

    and then open the browser on http://localhost:8080 and accept the certificate

2. enable ingress in the values file `server.ingress.enabled` and either
      - Add the annotation for ssl passthrough: https://github.com/argoproj/argo-cd/blob/master/docs/operator-manual/ingress.md#option-1-ssl-passthrough
      - Add the `--insecure` flag to `server.extraArgs` in the values file and terminate SSL at your ingress: https://github.com/argoproj/argo-cd/blob/master/docs/operator-manual/ingress.md#option-2-multiple-ingress-objects-and-hosts


{{ if eq (index .Values.server.config "admin.enabled") "true" -}}
After reaching the UI the first time you can login with username: admin and the random password generated during the installation. You can find the password by running:

kubectl -n {{ .Release.Namespace }} get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d

(You should delete the initial secret afterwards as suggested by the Getting Started Guide: https://github.com/argoproj/argo-cd/blob/master/docs/getting_started.md#4-login-using-the-cli)
{{ else if or (index .Values.server.config "dex.config") (index .Values.server.config "oidc.config") -}}
After reaching the UI the first time you can login using Dex or OIDC.
{{ else -}}
After reaching the UI the first time you cannot login with username and password since you've disabled it. You should enable admin back or configure Dex via `server.config.dex.config` or OIDC via `server.config.oidc.config`.
{{ end -}}