installation problem

Hello,

I wish the subscribers to be able to subscribe to comments, so I installed the StCR plugin.

Unfortunately, I only have ‘Vous pouvez gérer les abonnements aux commentaires de ce billet.’ in the input box, nothing else.
This means (translation from french) “you can manage the subscriptions of this post” and hyperlink to the user subscription page is generating an 404 error.

I guess something is wrong somewhere

Kind regards
Alexandra