I've watched https://answers.themler.com/articles/57653/how-to-edit-joomla-articles and at 1:39 min there is "ugly/difficult " view on the article CSS mixed with content. What is problem? I want to...

I have a paid version of themler working fine so far with joomla. I have embarrasing issue for editing articles. Some articles won't show in the list, even when I use the search tool. Any clue about...