There is a big difference if you use insecure: trueor not. If enabled, Traefik dashboard will be available on port 8080 at path /dashboard/ on any "host" without a router. If disabled, you should see it at assigned entrypoint https port 443 with rule Host() and path /dashboard/. I don't see any certresolver in your config.
Share your full Traefik static and dynamic config, and docker-compose.yml if used.
Compare with simple Traefik example. Static config is in command, dynamic config is in labels.