Web console https protocol dont work

Couchbase 4.5.1 Enterprise edition with 2 nodes and SG 1.3
SO = Amazon Linux AMI release 2017.03

i want to access web couchbase console through https protocol i read the topic of documentation “Encryption on the Wire”

say download the self-signed certificate that provide couchbase in web console and install in your browser after go to URL https://serverIp:18091 and enjoy
But don’t work for me
the connexion its refused
i verified the rules of ports and all its OK

any solution?