Subscribers to the working example will be redirected here.
Why do you need to direct subscribers to this page?
One should always redirect users to a page that confirms their subscription. Readers who have subscribed will be sent an email to confirm their subscription. GC Articles uses GC Notify to send a link for users to click to confirm. While all GC Articles needs them to do is click the link, it requires opening a web browser to execute the subscribe function.
So rather direct subscribers to a blank white page, we direct them to a confirmation page like this one in your GC Articles Collection.