In case use use Proxmox 9.1.x and you want to use the new Hetzner Cloud DNS API.
- Go to folder /usr/share/proxmox-acme/dnsapi
- Create a new file "dns_hetznercloud.sh"
- Use this code: https://github.com/acmesh-official/acme.sh/blob/master/dnsapi/dns_hetznercloud.sh
- Edit this file /usr/share/proxmox-acme/dns-challenge-schema.json just add "hetznercloud": {}, under the entry "hetzner"
- systemctl restart pveproxy
- systemctl restart pvedaemon
- Go to Datacenter/ACME and delete old hetzner plungin (important)
- Add Challenge Plugins "hetznercloud" and Change API Data to HETZNER_TOKEN="your Token goes here" -> TOKEN in capital letters!
- Go to your host and change under System/Certificates ACME to "hetznercloud"
- Have fun getting your new certificate!