The website uses a theme from TF. The theme was never updated, and the theme has gone through many updates and versions since (the site is two years old). When the theme was originally installed, it used WPBakery as the composer, but the theme developers moved to Elementor. Since the theme was never updated, would updating to the current new version that uses Elementor cause issues?
Check the theme documentation. There should be a guide for installing major updates.