The s2Member Unique IP Access Restrictions apply to all s2Member Levels, however if you need to fine-tune these settings to apply different rules for different levels, you can use an MU-Plugin with some PHP code to achieve this.

The code in the following examples should go into the following file (if this file and directory do not exist, please create them): wp-content/mu-plugins/s2-ip-restrictions.php

Disable Unique IP Access Restrictions on a Per-Level Basis

To disable Unique IP Access Restrictions for a specific Level of user (Level 4 Users in the below example), use the following code:

<?php
add_filter('ws_plugin__s2member_disable_specific_ip_restriction', '__s2_disable_certain_ip_restrictions', 10, 2);

function __s2_disable_certain_ip_restrictions ($bool, $vars) { 
    if(username_exists($vars['restriction'])) { 
        $user = new WP_User(0, $vars['restriction']); 

        if($user->has_cap('access_s2member_level4')) 
            $bool = true; 
    }
    return $bool;
}

In this example, these custom settings will only apply to Level 4 users. All other users will have whatever Unique IP Access restrictions are configured in WordPress Dashboard s2Member Restriction Options Unique IP Access Restrictions.

Set Per-Level Maximum Allowed IPs

To set a custom Maximum Allowed Unique IP Addresses for a specific Level of users (in the exmple below, we set Level 8 users to have a maximum of 50 Unique IP addresses), use the following code:

<?php
add_action('ws_plugin__s2member_before_ip_restrictions_ok', function(array $vars) {
    $username  = $vars['restriction'];
    $user              = $username ? get_user_by('login', $username) : null;
    $role               = $user ? c_ws_plugin__s2member_user_access::user_access_role($user) : '';

    if($role === 's2member_level8')
        $GLOBALS["WS_PLUGIN__"]["s2member"]["o"]["max_ip_restriction"] = '50';
});

In this example, these custom settings will only apply to Level 8 users. All other users will have whatever Unique IP Access restrictions are configured in WordPress Dashboard s2Member Restriction Options Unique IP Access Restrictions.