Connecting Error Postgresql in Heroku CLI

just a few minutes ago, I created a Database in Heroku. Then I tried to connect to it with Git Bash. But I got this error

psql: error: could not connect to server: could not connect to server: Connection timed out (0x0000274C/10060)
    Is the server running on host "ec2-34-200-116-132.compute-1.amazonaws.com" (34.200.116.132) and accepting
    TCP/IP connections on port 5432?

anyone knows, what is the reason. BEST