I’ve checked your site, but do not see the problem.
Please try to inspect site code using DevTools once the popup appears. Right-click on any page element and select Inspect Element. The DevTools window will open at the bottom of your Chrome browser. Check if there is an error in the console.

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Hello,

I do not see the problem http://prntscr.com/krm0zw Please describe in details what should I do to recreate the problem on your site.

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Hello,

Did you add the code in functions.php file of your child theme that is activated ou your site?
You may try to add this code in Theme Option > Custom css:

#order_comments_field {
  display: none;
}

Let me know the result.

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You’re welcome!

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Hello,

Please provide us with temporary wp-admin access so we can take a closer look.

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Hello,

Very likely you reached the Max Input Vars limit because of menu items number and your WP can’t save all the settings of your menu. So, if you choose the option, save menu but then you’ll see that option is not saved then increase max input vars limit to 5000 or 8000. You can contact the hosting provider and ask for help with increasing. Read more http://sevenspark.com/wordpress/menu-item-limit

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Hello,

You need to disable Catalog mode – http://prntscr.com/krkn8b

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Hello,

Please check one more time http://prntscr.com/krklji > http://prntscr.com/krklnn + https://prnt.sc/krkll0

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Hello,

You may delete this code:

<!–[if IE 9]>
<link href=”css/ie9.css” rel=”stylesheet” type=”text/css” />
<![endif]–>

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You’re welcome!
Have a nice day.

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The problem is caused by this custom css code – http://prntscr.com/krb9ot

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Also, Container Background Color you need to set in Theme Options > Styling > Content or disable Footer fixed in Theme Options > General > Footer.

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Hello,

Please try to disable Dark version http://prntscr.com/krautz then clear cache and check.

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Hello,

Unfortunately, there is no possibility to select position of the video.
I’ve sent your request to our developers. Maybe in next theme update will be added some improvement.

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Theme Options > Header Settings > Enable header overlap > Off or go to Edit your home page > Page Layout > Enable header overlap > Off.

Regards