Understanding / configuring logins

I'm trying to figure out how to use the auto-fill feature to include the login credential for a website, but it isn't working. I have looked at the Help site, but it doesn't have any details.

One of the sites is https://my.hostmonster.com/cgi-bin/cplogin

For this site, my username is "gusnowski.ca"

Another site is - https://account.meraki.com/login/dashboard_login

I have tried multiple times, but I can't get RDM to fill the forms. For a browser I am using Firefox and embedded within RDM.

It makes sense that I will need to use some sort of variable to identify the fields.

With Hostmonster, under "Login", I have used the "Discover" tool and it comes up with:

Form ID = l_login_form and

Password ID = lpass

From there, where do I enter the username and password? I have attached two images of the Hostmonster example.

If someone could explain this to me it would be much appreciated.

Thank You

Robert Gusnowski