When asking your emails over the web browser (so you are not using a mail app client on your Mac like Mail.app for example) you need to first save your Merlin licence file on your Mac to be able to use it in a second step to license your Merlin application.
Following screencast shows those actions and uses a gmail account as example…
Perhaps it is time to consider a different format for the ‘How to’ section. A blog shows the most recent comments, but a table of contents might be more useful for people who have a problem, or who are browsing.