Hello, Tom
Our theme can cause a problem when it is disabled and activated another theme.
You need to fix mentioned js errors. Make sure that you tried to disable all plugins except WooCommerce and Elementor.
If it is not plugin’s fault, contact your hosting provider and ask for assistance. Maybe there is some minification and caching from server side, or something else that is a reason for the problem.
Kind Regards,
8Themes Team