In WPBakery Page Builder (was called Visual Composer), do you see the Post Grid elements?
Here is a screenshot with the standard grids shown:
Would you be able to use these? Our addon extension can be downloaded from …
For Page Builder 5.5.0 and later:
https://www.dropbox.com/s/ai2w7y8n07jq2nb/search-filter-pro-wpb-pb5.5plus-0.1.0.zip?dl=0
For Page Builder before 5.5.0:
https://www.dropbox.com/s/da89oac7bf355gw/search-filter-pro-wpb-pbpre5.5-0.0.4.zip?dl=0
This will also give you a Search & Filter form element for Page Builder. In the Page Builder Post Grid element settings, the Data Source needs to be set to Search & Filter, and then for you to select the form.
In Search & Filter there will appear a new Visual Composer Display Results method.
The pagination is set in the VC Post grid.