Recently a security vulnerability was reported in the Popular WP Bakery, Visual composer plugin in verison 6.2.0 and below. Please update the plugin to latest version :
1. Graph your WPLMS Theme purchase code
2. Download the plugin, replace the XXX with your item purchase code. [DO NOT SIMPLY CLICK Below link ]
3. Install the plugin in your site, re-installing a plugin in WP 5.5 simply updates the plugin. See video below :
Update Plugins by Uploading a New Version–> https://www.wpbeginner.com/news/whats-new-in-wordpress-5-5-features-and-screenshots/
4. IF you are on WP 5.4 or below use cPanel or FTP to update the plugin.