Recently I stopped my instance for 2 days and I again stated that the status is showing running. However, if I hit that IP in the browser it is not opening. It shows this error:
It sounds like you are not using an Elastic IP Address. Go to the console and there should be a new public IP address.
If you're planning to use this instance more permanently you should take a look at adding an Elastic IP Address.
More documentation available: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/elastic-ip-addresses-eip.html#using-instance-addressing-eips-allocating