I'm sorry for the issue you have. Let me explain to you a little bit more about the WPBakery update. WPBakery did a major release update of their plugin (ver. 6.0) 3 months ago (May 15). Since then, ALL of their users (including us), complained about bugs and issues with WPBakery 6.x. They have released a lot of bug fixes but still, the version is not really stable. That is the reason why we still run version the most stable version in our theme. Even a theme that proclaims to be compatible with vers 6 of WPBakery will have an issue. Just look at the comments at WPBakery page to see the complains and check their changelogs.
The good news is that we have worked here to debug their plugin and fix a major bug that caused a page break. If you want to use WPBakery 6 immediately, please, have a chat with us at http://support.irontemplates.com and we will provide the new version with the bug fix.
We will also make the update public as soon as WPBakery will release a stable version of their own plugin and we can't wait!
Waiting to hear from you.
After reading this comment, If you'd like to change your rating about our theme, we would very appreciate Ronbhim. We are all on the same boat about the WPBakery plugin but I'm ready to do what it takes to make you a happy customer.