CM Anonymous User Posting - Access Control Settings
Defining the Access Controls for Anonymous Users
After installing the Anonymous User Posting add-on, you need to make sure to define the access control settings for anonymous users. Go to the Access and moderation tab under plugin settings to select options for the permissions granted for anonymous users.
In the Access and moderation settings, "Everyone" refers to anonymous users. The admin can allow anonymous users to view questions and/or post questions, as well as post answers and comments.