Used to like this plugin. Now it's clear that the devs has no intention to maintain the plugin anymore (their last comment was they have no plans for updates after months of silence), last meaningful update was one year ago and they just recently (forced) to push an update after complaints because their plugin rendered WPBakery backend useless after WP 5.5 upgrade. Even after the bug fix some problems still remain. Steer clear from this plugin and the MPC team.
Please remove your current Massive Addons plugin and install newly downloaded 2.4.7 ( 17 August 2020 ).
Yes, it contains important fix for WordPress 5.5 compatibility and works with WPBakery Page Builder 6.2