how to remove embedded code i can't find?

Site URL: http://www.riyahthor.com

You'll see at the top of my website is a small black banner/special.

I created this through Mailchimp as an embedded form - they gave me a code to copy and paste into my website.

Now that the special is done I want to remove the banner. However when I click on code injection (in advanced settings) I see other codes I've put in, like my fb pixel, but no piece of code for this mailchimp form. 

When I go to the code options on an individual page's settings, I only have the option of adding new code, I can't see any that's already in there.

Basically if I can't find it anywhere I don't know how to delete it.

Can someone help me troubleshoot and remove this code? Thank you so much!

Hi, every time I create a new page, there is an embedded code that can be seen (this is an opt-in from Kartra) which I pasted only once on a different page. But now, I can't remove it. Here's the ss, the one in a purple square is the preview of the opt-in page on Kartra but this is supposed to be a blank page. Please help me, I am not an expert on this! 

12 minutes ago, Shei said:

Hi, every time I create a new page, there is an embedded code that can be seen (this is an opt-in from Kartra) which I pasted only once on a different page. But now, I can't remove it.

Please post the URL for a page on your site where we can see your issue. For us to see the URL you need to include the link in the content of your post. The URL field the forum software provides is not shown to us.

A link to the backend of the your site won’t work for us, i.e. a URL that contains /config/.

Please set up a site-wide password, if your site is not public and you've not already done so.

Post the password here.

Adding a site-wide password does not allow anyone to alter your site. It only allows those with the password to see your site.

Please read the site-wide password and how to share a link documentation to understand how they work.

You may find How to post a forum question post useful.

We can then take a look at your issue.