Firewall blocking TCP port 1688. Fix: On the KMS host, allow inbound port 1688. On clients, allow outbound.
The request to "develop feature: kms gui eldi ip or name" typically refers to configuring the (a component of tools like KMSnano or KMSpico) to point to a specific Key Management Service (KMS) host using its IP address or Fully Qualified Domain Name (FQDN). Configuring KMSELDI GUI Features kms gui eldi ip or name