AWS RDS Postgres connection failure

Question

I am getting started on AWS RDS. I am trying to create a public PostgreSQL instance (free tier) and trying to connect from my local laptop through SQL Workbench. I am following

Answer 1

SQL Workbench was a MySQL client GUI last time I checked. So it is not surprising if it cannot connect to a database forked from PostgreSQL.

Try psql or some other PostgreSQL client software.