Set the default country to Canada

change-default-country-canada

<?php

function filter_pmpro_default_country( $default_country ) { 
    // Set country code to "CA" for Canada.
    $default_country = "CA";

    return $default_country;
}
         
add_filter( 'pmpro_default_country', 'filter_pmpro_default_country' );