Sometimes when I use the One Click Installer I never get the Email with the connection info. I have found that it also isn't getting it's Connection ID. To solve the issue I usually use the command line to launch the Config UI and ask it to get a new ID. That works, but I still don't get the email.
Looking at the logs, it looks like it is trying to send the email before it gets an ID, which of course wouldn't work. I have tested the same installer multiple times, sometimes it works, sometimes it doesn't - hoping you can give me a tip on how to increase my success rate.