Default is length is 6 digits. This can be changed in the linkstack.php config file in /config with the key user_id_length.
Sequential numbering can still be used by setting disable_random_user_ids to true.
Added email verification after user registration. After a user registered, an email is sent to the email used to sign up. The mail contains a verification link which is required to complete the registration process.
This feature can be turned off in the Admin Panel under: Admin>Config by changing the setting "Register_auth" from "verified" to "auth".
Read more about this on the Blog here: https://blog.littlelink-custom.com/optional-email-verification/
Julian Prieber
Khashayar Zavosh