Menu Icon Not Showing / Menu Content Not Hiden

I’ve just created a new child-theme for this site:

https://www.alicejoeconsulting.com

And I’ve added

<meta name='viewport' content='width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no' />

and

<!--- mobile-menu-icon -->
	<div>
		<?php echo do_shortcode('[responsive-menu]'); ?>
	</div>
<!--- /mobile-menu-icon -->

But as you see on mobile version of site, no menu icon can be see, and menu content is automatically display.

https://www.ads-software.com/plugins/responsive-menu/