WPbakery gives you instant access to built in content elements. Each content element has been carefully crafted and offers multiple options that will enable you to build any layout you desire. You can build complex layouts based on these content elements within minutes, and without requiring a single line of code. Please check this video tutorial:
You can use these plugins with the revus theme and you are fully compliant with the Envato’s policy, but you cannot activate them as the owner (so don’t try to use the revus purchase code to activate one of these plugins).
When you purchase a theme from ThemeForest that bundles WPbakery and Revolution Slider, you are free to use these Premium plugins with the theme. However, your revus purchase does not give you individual WPbakery and Revolution Slider licenses that allow you to activate or download these plugins as you wish. Activation doesn’t mean the plugin will not work but only that you cannot receive direct updates. Please don’t worry if you see warning messages about the plugin license activation.