Could we use something like that because it's not showing and I don't know if the code is wrong or?

	{if isset($id_shop) && $id_shop == 3}
		{hook h='displayFAQs' entityType='product' entityId=$product->id}
	{else}
		<p></p>
	{/if}

EDIT:

I made it work with different approach, instead of shop ID I detect the domain and as I only have one shop where the design is different I reversed the if clause:
 

	{if $smarty.server.HTTP_HOST|strstr:'domain.com'}
	{else}
	  {* Default content if no domain match *}
	  {hook h='displayFAQs' entityType='product' entityId=$product->id}
	{/if}