On the page that says "To manage your subscriptions, please enter your email address here below. We will send you a message containing the link to access your personal management page", if the user enters their email and clicks "send", the program appears to do something, and then the page reloads. But no email is ever received.
Other email notifications are working fine, i.e. when someone posts and comments and clicks subscribe, and then someone else comments, the first commenter receives the email notification.
On a related issue, when a user receives an email notification of a comment, there is a link included in the email for the user to manage their subscription. Clicking that link results in a page not found error. The manage subscription link is:
http://mywebsite.com/reviews/%25postname%25/comment-subscriptions?sre=fakename%40gmail.com&srk=d1749254ae20xxxxxxxxxx78882176af (I have changed some of the link content in this example to make it anonymous)