I noticed something odd, a ton of subscriptions from fake email addresses. While investigating this, I learned that specific pages have imploded. It is at this juncture that I have to reference my old post about open source software and the volatility in open source solutions: Onward my Stallion!
The pages that went boom are under the subscription tab: Registration and Login. You can sign in and register on the main page of the website, so it isn’t a huge loss.