@Adam Rahmat Apologies for the delayed response, regarding this error AADDS104 seems NSG is not linked to the subnet that Microsoft Entra Domain Services (MEDS), review this documentation - https://learn.microsoft.com/en-us/entra/identity/domain-services/network-considerations#network-security-groups-and-required-ports which might help to review your network configuration of your domain services.
Let me know if you have any questions or if the issue still persists, feel free to share your Azure Subscription ID and Domain services instance name to investigate this further (share these details over the private message of this post).