Filter the settings of email frequency when using the Extra Expiration Warning Emails Add On

custom_pmproeewe_email_frequency.php

<?php
/**
* Filter the settings of email frequency sent when using the Extra Expiration Warning Emails Add On
* https://www.paidmembershipspro.com/add-ons/extra-expiration-warning-emails-add-on/
*
* Update the $settings array to your list of number of days => ''. 
* Read the Add On documentation for additional customization using this filter.
*/

function custom_pmproeewe_email_frequency( $settings = array() ) {
	$settings = array(
		60 => '',
		30 => '',
	);
	return $settings;
}
add_filter( 'pmproeewe_email_frequency_and_templates', 'custom_pmproeewe_email_frequency', 10, 1 );