Hi Amin,
Thanks for writing in! It seems that you’re using 3rd party WooCommerce plugin which cause this issue. First of all, disable all of your 3rd party WooCommerce plugins and check your issue again.
If you’re still having issues, disable all of your 3rd party plugins except Cornerstone and WooCommerce and see if you’re experiencing a plugin conflict. If the issue is resolved, then you can activate your plugins one by one to see which plugin causing the issue.
Further, you need to disable your child theme by activating your parent X theme and see if you’re encountering any issues with your child theme customizations.
When testing, if you’re using a caching plugin on your server, always make sure to purge your server cache and also clear browser cache before testing.
If you’re still having issues, provide us with your WordPress login credentials in a secure note to check your issue further.
Thanks!