This was appended to an email that found its way to my inbox today:
When you click the link above, you will see our sign-up page.
To manage your subscription fill in your email address and name (legal and last).
Then scroll down and click the big red subscribe button.
You will then be redirected to a form that will give you a link to
update your profile. Ignore the big red “There are errors below” and click on the link that says “Click here to update your profile”. This will send you an email with a link to allow you to update your profile.