Did you clear your site and browser cache?
You can with the tagdiv composer and the tagdiv cloud library plugin https://forum.tagdiv.com/tagdiv-cloud-library-plugin/. Just import a single post template and drag the newsletter element where you want it to appear.
The image you shared is not visible http://prntscr.com/lvhq71. But if you want to stretch a post, you can only do so by importing a template from the tagdiv cloud library and assigning it to posts as you do with other templates https://forum.tagdiv.com/tagdiv-cloud-library-plugin/
See these guides:
1. https://forum.tagdiv.com/installing-demos/
2. https://forum.tagdiv.com/tagdiv-composer-tutorial/
Make sure you download “All files and documentation” from ThemeForest then extract the file and check inside the plugins folder. It should be there.
Also, sticky columns for single posts and smart lists are not sticky when a user is logged out. Can’t figure out where the problem is. But they become sticky when I press ctrl+f5.
I found the problem of td composer freezing, lagging or taking too long to respond is only happening in chrome (from around newspaper 9.1). It works well in firefox. Could this be a bug?
I have observed that my sticky columns are not sticky when logged out. Is this a bug?
thanks
From the downloads section of your themeforest.net account. Just click sign in from the top right of the ThemeForest website.
Btw, is there a way to switch fonts? I want calibri to show before gill sans in your fonts list in theme panel
I will see if it is possible. But thanks.
Might be a minification problem. I have included the code for now. Will keep checking to see what the problem is.
you are welcome.
That colour can only be set through CSS if you are using default post templates. So check the custom code section or Appearance>Customize to see if you put it there. And you cannot find the code without using the browser inspector.
Your images are not loading either on the front page. Disable the lazy load feature from here 
Put it in the custom CSS section of the theme panel 
See this guide https://forum.tagdiv.com/background-introduction/.
Try using the browser inspector https://forum.tagdiv.com/create-custom-code-using-the-browsers-inspector/
The new version 9.2 of newspaper theme says it is compatible with Gutenberg and WordPress 5.0. However, I have not updated to 5.0 and will only update when higher stable versions are available.
Use TD Composer instead.
You have to use the latest version of the theme and plugins. Download newspaper version 9.2 from Themeforest. Then go to Newspaper>Plugins on your WordPress dashboard and update each plugin that you have installed from the theme (including td composer).
Go to Newspaper>Plugins and update it from there in your WP dashboard if you have the latest version of the theme.
Okay.