Hi, first a t all thank you for such a great plugin.
I would like help on getting available the code field on a theme I'm using. First, I already activated the plugin, and when try to register a new user, it says "ERROR: Wrong Invitation Code." but there's no code field to enter. It seems maybe (I don't know exactly), that it needs to include the class in the main style.css from the theme.
Please, where and how do I must reference the code field to make it appear in front end?