Local machine cannot access to aws MSK

I followed "public access" to set up the configuration. I have two goals, Firstly, I want to create topic from local terminal by using this command line "<path-to-your-kafka-installation>/bin/kafka-topics.sh --create --zookeeper ZookeeperConnectString --replication-factor 3 --partitions 1 --topic ExampleTopicName", but it always return "the broker is not available". Secondly, I want to connect MKS from local .Net Application. However, it seams cannot connect to the MKS successfully.

This is my some configuration that attach on my MKS

1. Create public subnet 172.31.0.0/20 and 172.31.16.0/20 and attach an Internet Gateway
2. Close unauthenticated access control off and turn on SASL/SCRAM access-control methods. Besides, I attached an secret for this authentication and add allow.everyone.if.no.acl.found to false to cluster's configuration.
3. Turn on public access
4. Cluster configuration
5. Producer Configuration
6. Security Group

Does anyone can give me some advice or hints? I do some research that not sure I have to add listeners in my cluster configuration? Thanks for your time and consideration.