Same ID to elements on different scenes

I tried that, but, for some reason, even that wasn’t working (mostly, I was doing it wrong).

However, I had a look at the link you sent for the extension project and found another one that worked: hypedocument.currentSceneElement

So, this code went to my <head>:

	<script>

		function extendHype(hypeDocument, element, event)
			{
				hypeDocument.currentSceneElement = function()
					{
    					return document.querySelector('#'+this.documentId()+' > .HYPE_scene[style*="block"]');
					}
		
				return true;
			}

		if("HYPE_eventListeners" in window === false)
			{
				window.HYPE_eventListeners = Array();
			}
	
		window.HYPE_eventListeners.push(
			{
				"type":"HypeDocumentLoad", "callback":extendHype
			});
	
	</script>

And that’s the code of my fuction to delete the element is the cookie is found:

	var cookieName = getCookie("privacy");

	if (cookieName === 'yes')
		{
			var elm = hypeDocument.currentSceneElement();
			var child1 = elm.querySelector('.sticky');
			child1.parentNode.removeChild(child1);
		}