Acme plugin: certificates do not get updated

Hi,

Unfortunately, I can’t get the certificates automatically updated. Triggering the initial config works fine.

I see the entry in the certificates table with a “created date”: 2021-03-12 23:16:18. According to my config (see below) I’d have expected the certificate to be updated automatically. What am I missing here? Thanks!

Setup
I’m using Kong 2.3.3 with postgres db and ingress 1.2.0 on k3s.io. The acme plugin is configured like follows:

{
  "created_at": 1619196476,
  "id": "e3b5db31-6a23-46e8-bf5c-ebc1de47fd81",
  "tags": [
    "managed-by-ingress-controller"
  ],
  "enabled": true,
  "protocols": [
    "http",
    "https"
  ],
  "name": "acme",
  "consumer": null,
  "service": null,
  "route": null,
  "config": {
    "eab_kid": null,
    "api_uri": "https://acme-v02.api.letsencrypt.org/directory",
    "account_email": "my-email@address.com",
    "storage_config": {
      "redis": {
        "auth": null,
        "port": null,
        "database": null,
        "host": null
      },
      "shm": {
        "shm_name": "kong"
      },
      "vault": {
        "host": null,
        "port": null,
        "token": null,
        "timeout": null,
        "https": false,
        "tls_server_name": null,
        "kv_path": null,
        "tls_verify": true
      },
      "kong": {},
      "consul": {
        "host": null,
        "port": null,
        "token": null,
        "timeout": null,
        "https": false,
        "kv_path": null
      }
    },
    "cert_type": "rsa",
    "tos_accepted": true,
    "fail_backoff_minutes": 1,
    "domains": [
      "my-hostname.com",
      "www.my-hostname.com"
    ],
    "renew_threshold_days": 30,
    "eab_hmac_key": null,
    "storage": "shm"
  }
}

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