Elegant shows a form to subscribe to your newsletter, above the fold, in the right section of every article.
You need to put your FreeLists name in
FREELISTS_NAME in your configuration file.
To customize user experience you can also define,
FreeLists has deprecated the form Elegant used. Due to which,
user is redireced to FreeLists deprecation notice page.
FREELISTS_NAME is correct then their notice page has a link to their new form.
Fixing this issue is on our roadmap. You can track it here.