Istio does not find the ingress gateway

I am having issues after configuring my application using isto service mesh. It seems like that the request is not routed to the istio/envoy ingress-gateway.
After runnign istio analyze I get the error:
Error [IST0101] (Gateway my-ns/my-gwy) Referenced selector not found: “istio=ingressgateway”

kubectl get gateway -n my-ns -o yaml

...
  spec:
    selector:
      istio: ingressgateway
    servers:
    - hosts:
      - app1.play.example.com
      - app2.example.com
      port:
        name: https
        number: 443
        protocol: HTTPS
      tls:
        credentialName: istio-ingressgateway-certs
        mode: SIMPLE

kubectl get pod -o yaml istio-ingressgateway-12345 -n my-ns-istio-system

...
  labels:
    app: istio-ingressgateway
    istio: ingressgateway
...

Seems like ingress pod ist labled correctly. However traffic doenst reach the ingress and istioctl analyze seems to detect it. Any ideas what is going wrong ?