Please note that this documentation is for the most recent version of this extension. It may not be relevant for older versions. Related documentation can be found in the documentation directory of the extension.
The Newsletter Subscription is based on Topics - therefore you need to create firstly your Topics (one or more).
If there is only one topic available and the subscriber confirms the first time his mail address by using a valid hash, the subscriber will be subscribed to the single topic automatically! For that reason the subscriber record counts the login times.