I am using Mozilla Firefox for Windows

Here's how you can download members-only files in Mozilla Firefox:

1. Click on the Download here or similar link, it opens a new dialog box that you can see in Figure 1, below.
2. 
   Figure 1: Enter your login and password here
2. Type the User Name and the Password in the text box. Or even better, copy and paste the login info from your welcome email, later email, or the browser.
3. It's a good idea to check the box that says Use Password Manager to remember this password if you want to download multiple templates. If your old, remembered password is not working, the password might have been changed. Just subscribe again using this form. The form is intelligent enough to know that you are already a member and will provide you with the login: password info instantly within your browser.