Scratching My Head Over Hustle

Hey. I'm trying to remove pop-ups from Hustle.

Specifically, I'm trying to remove
<div id ="wph-optin--popup">

I'm trying to do this with jQuery. So far, I have:

jQuery(document).ready(function(){
  jQuery("#wph-optin--popup").remove();
});

//I've also tried:

jQuery(document).on("ajaxComplete", function() {
	jQuery("#wph-optin--popup").remove();
});

The second one kinda works, but not really. After some delay, it removes the element. Any recommendations would be super helpful. I've been scratching my head over this for hours.