This recipe Adjusts the priority of the Group Account hook on the pmpro_checkout_level filter.

my-pmpro-group-account-fix.php

<?php // do not copy this line
/**
 * Adjust Group Account Hook Priority for Compatibility with Auto-Renewal Checkbox Add On
 *
 * This recipe modifies the priority of the Group Account hook on the `pmpro_checkout_level` filter.
 * Resolves a conflict when using the Auto-Renewal Checkbox Add On with a Group Leader Account 
 * to ensure proper functionality at checkout.
 *
 * For use when using both:
 * - Group Accounts Add On: https://www.paidmembershipspro.com/add-ons/group-accounts/
 * - Auto-Renewal Checkbox Add On: https://www.paidmembershipspro.com/add-ons/auto-renewal-checkbox-membership-checkout/
 *
 * Add this customization to your site by creating a custom plugin or using the 
 * Code Snippets plugin available for free in the WordPress repository.
 * Step-by-step guide: https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 *
 * Keywords: Group Accounts, Auto-Renewal, Membership Checkout, Priority Hook, Fix Conflict, 
 * pmpro_checkout_level, Add On Compatibility
 *
 * @return void
 */

function modify_pmprogroupacct_hook() {
    if (function_exists('pmprogroupacct_pmpro_checkout_level_parent')) {
        // Remove the existing hook to adjust its priority
        remove_filter('pmpro_checkout_level', 'pmprogroupacct_pmpro_checkout_level_parent', 10);
        
        // Re-add the hook with a higher priority (executed earlier)
        add_filter('pmpro_checkout_level', 'pmprogroupacct_pmpro_checkout_level_parent', 6);
    }
}
add_action('init', 'modify_pmprogroupacct_hook');