Why you hire a newbie when already experienced developer is here? yes, I have already worked with Visual composer and Jkreativ plugin; Apart from theme customization and WordPress, I have sound knowledge with latest version html, css, javascript, jQuery as well;
By the way, please let me know whether you using JKreativ theme for your project or using any other theme?
From my previous experience: while working on the Jkreative theme I noticed that one of the mandatory Plugins for JKreativ Theme that is Jkreativ Plugin is conflicting with wp bakery page builder. If we deactivate this plugin then the wp bakery page builder plugin works correctly but since Jkreativ plugin is the required plugin of the theme, cannot deactivate it.
Actually, this issue occurs when not using Landing Page Builder – Visual Composer. In this case, I just need to activate again Jkreativ and Visual Composer plugin then make sure you’ve been chosen Landing Page Builder – Visual Composer template for the homepage.
The list is quite lengthy - I am telling about my portfolios with WordPress; But due to NDA with client, I am unable to share my clients's intellectual properties over internet. I can share with you via PM, not in this open space:)
Please ping me on your convenient time to have a discussion. Need to check your project as well;