Thank you unhuman for your reply,
I sadly uninstalled and installed again, funny thing is, same thing happened, until the 3rd time of uninstall and re-install, that I decided while i first setup and logged in, create a read only user, after that, the Administrator password I created from the setup worked… weird huh?
unhuman, are you a couchbase professional administrator, would love to pick your brain and learn more about couchbase if you dont mind?