Hello,
As I see the sidebar with filters is showing on the shop page and the option to turn on/off sidebar is present in Theme Options > Product Page Layout > Sidebar.
Your problem was caused by the reason you didn’t replace the files when updating the old theme, but installed a new version as a new theme and left the old version. That’s why all widgets were removed from sidebars. Next time please watch the video tutorial how to update the theme:
Regards