We installed your plugin yesterday but can't get it work.
1. The plugin says "Sorry, there seems to be an error on the server. Please try again later." when typing in an email. I have tried to register a new e-mail for this purpose, but it doesn't work anyway.
2. Even if I try to register the adress manualy at the subscribers tab, (Add/Remove Subscribers) they doesn't show up in the list.
But I don´t get any error codes or something.