Thank you for your information.
The problem is caused by product metafields.
These fields didn't save correctly. This problem often happens on woocommerce platform.
If you get this issue, please quick save your products like screenshot.
Then, everything will be fine. We saved your all products again, so your shop sidebar is working well now.
Please check again on your end.
If you have any other questions, please contact us again without hesitation.
Best Regards, C-Themes