Hello, I bought Jevelin and I have problems with Slider Revolution. I installed all the plug-ins but this one is not active if I do not update, but the update does not work.
We had issues with CDN (Content Delivery Network) file cache.
Now files are finally updated and both WPbakery page builder and Slider Revolution plugin installations should be fixed.
Before installing both plugins it is recommended to uninstall Revolution Slider plugin. That will fix WPbakery page builder plugin not available for installation issue.