**NEW TO WP** Major issues with Visual composer

I am taking over building a website through WordPress from a partner I no longer work with. He was building our site using Visual composer from WordPress bakery. I am having some major issues with editing the site that have started in the last week. Using the tab feature it has started duplicating things in every tab. Also, the “home” page we have freezes as soon as you try to edit anything (in the wp page editor). It is the only page that does this. That’s the beginning of my issues. Any help would be great. I am really struggling to get this basic site finished for our business.