It’s complicated as that is a theme which is fairly outdated and it’s unlikely that it is fully compatible with the latest version of WP
As the theme has been removed then there’s no longer access to the source files or any updates
WP bakery may well have been customised for the theme and therefore even buying a standalone copy, may not resolve any issues
Support for plugins is not included for bundled items https://help.market.envato.com/hc/en-us/articles/213762463-Bundled-Plugins
Unfortunately typically support and updates would come from the theme author, however as per T&Cs envato can’t guarantee item lifespan and the author has the right to remove the item.
If your purchase was less than 6 months ago then it may be worth talking to support, however outside that the only option would be to look for s freelancer to help on www.studio.envato.com