To access this options, navigate to WP Admin -> PeepSo -> Configuration -> Accounts & Security
Under Usernames panel.
Username field will not be available during registration. PeepSo will automatically generate a safe username for new users.
At the very same panel, there is also an option to Clean up third party registrations.
Some plugins (like WooCommerce, EDD and LearnDash) create user accounts where the username is an e-mail address.
PeepSo uses the usernames to build profile URLs, which can lead to accidental e-mail exposure through site URLs.
Enabling this feature will cause PeepSo to step in during third party user registration and automatically generate a safe username for the new user.
Checking this option will allow the user to change their username. To change your username, go to Profile page -> About -> Account.