Hi,
I've installed freedyn but can't seem to configure it with my account. I setup my account to work by using "login with Google" option. Ive tried entering my dynu id or my gmail account and in both cases the password for my gmail account. Neither works.

You can see the username in Account Profile page.

I don't think you can use the password for your Gmail account as Google will not communicate to Dynu your password when you sign up. I was prompted a window to set up a username and password when I signed up with Google. If you did not get the window, better to reset your password.