Hello,

Please insert this code into the functions.php of the child theme:

add_action(
	'woocommerce_single_product_summary',
	function() {
		?>
		<div class="">
			<?php echo do_shortcode( '[html_block id="6915"]' ); ?>
		</div>
		<?php
	},
	100
);

Replace the ID of the HTML block for yours. https://gyazo.com/5e60f1ea9a13d1d8c0c0ff076119fb03

Best Regards