Set up cert-manager for kubernetes with multiple domain names

I followed this tutorial: https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nginx-ingress-with-cert-manager-on-digitalocean-kubernetes

And it worked at first, I set it up for one domain I have, and also for a subdomain, all seems good. I needed, though, to add another domain and it doe snot seem to work. after following the tutorial, what I did is to go to the ingress for my websites and do like this:

code
annotations:
  kubernetes.io/ingress.class: nginx
  cert-manager.io/cluster-issuer: letsencrypt-prod
spec:
  tls:
  - hosts:
    - mydomain.com
    - hello.mydomain.com
    - my-SECOND-domain.com
    - smething.my-SECOND-domain.com
    secretName: hello-kubernetes-tls

but in the ingress_nginx_svc.yaml I have:

code
metadata:
  annotations:
    service.beta.kubernetes.io/do-loadbalancer-enable-proxy-protocol: 'true'
    service.beta.kubernetes.io/do-loadbalancer-hostname: "mydomain.com"

Now I have my DNS records pointing to the external IP but for the my-SECOND-domain.com entries, when navigating to the page, I have an invalid certificate, chrome tells me that is using: FAKE acme certificate, while for the other domain the certificate is valid