Import user data using CSV

UPDATE SOLVED

I change my code to wp_insert_user beside bp_core_user_signup

$user_id = wp_insert_user(array(
                            'user_login' => $user_login,
                            'user_pass' => wp_hash_password( $email ),
                            'first_name' => $first_name,
                            'last_name' => $last_name,
                            'display_name' => $first_name . ' ' . $last_name,
                            'user_email' => $email,
                            'user_nicename' => $first_name