I had been building the http://db11.astonmartinsaigon.com/
I create 2 rows with the images and i put them to hidden in mobile display. However, when i access this website by smartphone i see the blank section of them. how can i fix them.
The best way to get this answer is Contact your purchased WPBakery plugin Author.
I can give you a solution if you would like. You can set a class for small devices and write media query for that class and set display: none; or in WPBakery each row has it’s own unique id you can set display none for that id in small devices media query.