Since the WPBakery Page Builder plugin does not allow updating via updating the theme, so please follow these steps below to update it.
Step 1 – Go to Dashboard > Plugins. Select the WPBakery Page Builder plugin, and click Deactivate.
Step 2 - After deactivate the plugin, go to Inactive tab, select the WPBakery Page Builder plugin and click Delete. All your content such as pages, options, images and posts will not be lost or erased by doing this. However, any customizations to the plugin's core files, such as PHP files will be lost.
Step 3
As Envato is a marketplace in which your orders and payments are processed, you have to contact them for any request for invoices, billings or any other transaction documents.
in case you want to get an invoice, please follow this guideline for more details: https://help.market.envato.com/hc/en-us/articles/205604563-View-Download-Invoices
Please see the steps below to enable Visual Composer for Service, Portfolio…
Step 1: Go to Visual Composer > Role Manager.
Step 2: Find Post types select Custom.
Step 3: Choose Post type you want to enable Visual Composer ( WPBakery Page Builder ).