Before update please make sure you have a backup of your current website.
Version 2.0 got major updates and you can cause damage to your previous content. All shortcodes moved to plugin territory since new version. Slider now is a part of home page template with different options.
All previous shortcodes not working anymore:
[fruitful_slider] [description] [tabs]
If you have many problems after update you can downgrade on previous version
New documentation available here