Issues when initializing AWS Directory Service

Hi, I am new to using AWS Directory Service.

I followed this lab https://docs.aws.amazon.com/directoryservice/latest/admin-guide/ms_ad_tutorial_test_lab_base.html

Next, I attached an EC2 instance using Domain Join.

My security group settings are as follows: Inbound: 3389 (My IP); All traffic (10.0.0.0/16) Outbound: All traffic (Everywhere)

I've added the AmazonSSMManagedInstanceCore and the AmazonSSMDirectoryServiceAccess to my instance profile as well.

However, I am still unable to login under corp\Admin with the password created when initializing the Directory. Also, I am able to login as Administrator under the local account.

Is there anything I done wrong? My directory is AD Standard based on Windows Server 2019.

My end goal is to attach an FSx so that I can do create Lambdas to transfer files over SMB.

IaC: https://github.com/andreswebs/terraform-aws-ad-fsx Lambda SMB: https://aws.amazon.com/blogs/storage/enabling-smb-access-for-serverless-workloads/