A test authorization for handalwaterheater.co.id to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
103.229.73.17: Fetching http://handalwaterheater.co.id/.well-known/acme-challenge/omsr9Ha9KYqVIRdsAQJLTkdH5OJTii69eocQdYxDrz0: Timeout during connect (likely firewall problem)