If you even see what appear to be spam or fake user accounts there is a WordPress setting you may want to check.
Spam or fake user accounts that do not have membership levels assigned to them may appear in the Members section.
A WordPress registration setting can be turned off to prevent some of these types of sign ups. You are able to turn this WordPress option off while still allowing members to register through WishList Member as they are separate options.
The setting is titled “Anyone can register” and it located in the General Settings section of WordPress.
There is a Setting in WordPress that allows you to turn off the option that allows anyone to register.