1. Make sure your theme and plugin is up to date
The reason most people have issues with the Visual Composer is because their theme or Visual Composer plugin is not up to date. Please double check the changelog and make sure your versions match the latest versions available. Otherwise please update.
2. Disable All 3rd Party Plugins
3. Confirm your site and WP url’s are the same
If your site and WordPress URL’s aren’t the same it can cause issues with the Front-End not working on the visual composer, so please make sure they are the same. You would check this at Settings / General.
Why is this the case?
Iframes are blocked by browser rules – iframe actions cannot be made to the different url ( this is security reasons and CSRF issues XSS attacks ).
We cannot do anything there, only the way to make it work is to use a “patched” browser that allows unsecure actions within another domain iframe.
4. Missing Total Modules? Make Sure Extensions Are enabled
Total includes many great custom modules that extend the Visual Composer allowing you to insert many new modules. If this setting is disabled you won’t have access to all modules and if you had used them previously then you may now see code on the front-end instead of the actual outputted shortcode. Go to the main “Theme Panel” page and make sure they are enabled.
5. Missing Core Composer modules? Check your Settings
If you aren’t seeing all the available Visual Composer Modules please go to Settings -> Visual Composer and double check that they are all enabled for your specific admin roles.