ultimatemember/includes/admin/templates/dashboard/upgrade-request.php

<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

$url = add_query_arg(
	array(
		'um_adm_action' => 'manual_upgrades_request',
		'_wpnonce'      => wp_create_nonce( 'manual_upgrades_request' ),
	)
);
?>

<p><?php esc_html_e( 'Run this task from time to time if you have issues with WP Cron and need to get UM extension updates.', 'ultimate-member' ); ?></p>
<p>
	<a href="<?php echo esc_url( $url ); ?>" class="button">
		<?php esc_html_e( 'Get latest versions', 'ultimate-member' ); ?>
	</a>
</p>