Cant connect to pgAdmin

Is "Publicly Accessible" enabled for RDS as described here?
If this is not enabled, RDS will not be able to connect even if it is running on a public subnet.
https://repost.aws/knowledge-center/rds-connectivity-instance-subnet-vpc

Hi,

Even if the RDS instance is configured as a public instance if the associated subnets are inaccessible from the internet, you would not be able to connect to the RDS instance.

Check if your route table attached to the subnets have a route to an internet gateway. Additionally, ensure that the Network ACL allows traffic to the RDS instance.

Configuring Subnet -> https://docs.aws.amazon.com/vpc/latest/userguide/configure-subnets.html Connecting an Internet Gateway -> https://docs.aws.amazon.com/vpc/latest/userguide/VPC_Internet_Gateway.html

Hope this helps