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My Website Won't Load

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My website ozpt.com does not load on FireFox. It works on CHROME, SAFARI, ANDROID, EDGE etc. But when i try to open in FireFox I get the spinning wheel and it won't load. Sometimes if i refresh, it will load the one page, then when i click on anther link, it won't load that new page, and back to spinning wheel.

I don't understand why I'm working on all other browsers, but not on FF?

My website ozpt.com does not load on FireFox. It works on CHROME, SAFARI, ANDROID, EDGE etc. But when i try to open in FireFox I get the spinning wheel and it won't load. Sometimes if i refresh, it will load the one page, then when i click on anther link, it won't load that new page, and back to spinning wheel. I don't understand why I'm working on all other browsers, but not on FF?
Pśipowjesone fota wobrazowki

Wšykne wótegrona (2)

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Not work for me using Firefox v54. I did a web search: https://www.bing.com/search?q=ozpt.com

Some of the links work. https://ozpt.com/maitland-overview/ https://ozpt.com/course-descriptions/course-schedule/

Some don't.

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Your theme shows the flipping hourglass overlay in front of the page until it detects that loading has completed, and then it removes it. You can see the code in this file:

https://ozpt.com/wp-content/themes/enlighten-pro/js/custom.js?ver=5.6.1

jQuery(document).ready (function($){
   
    //Web Pre Loader
    var preloader = $('.preloader');
    $(window).load(function(){
    	preloader.remove();
    });

But apparently this code does not run every time you display the page, probably related to caching, similar to the problem with another theme recently: https://support.mozilla.org/questions/1320526

Could I suggest you just get rid of this kind-of-useless feature? You can prevent the preloader from displaying using some custom CSS:

body > div.preloader { display: none !important; }

You can add that using the "Additional CSS" option in the Theme Customizer. More info in this article (something that popped up in a web search):

https://wpengine.com/resources/customize-theme-css/

If you want to keep the hourglass, check with the theme author for whether they have a solution.