I'm having a problem where my service icons vanish once I click "update" on the edit page. At first, I contacted the Visual Composer support team, but they directed me to you with this description of the problem:
"The issue is because there is an inbuilt version of Visual Composer (or the related code) present in your theme which is overriding the standalone plugin version and hence causing the issue. You will have to get rid of it. I would advise you to do so with the help of theme author, otherwise you might loose the extra elements added by him. Once this is done, you can install the standalone plugin and it will work fine."