Please deactivate all the plugins not related to the theme and switch the parent theme, check the issue, If the problem has gone, activate the plugins one by one, checking the issue to detect which one causes the problem.
if the problem remains, even after the plugins deactivated leave the plugins deactivated for us to check and provide your site admin access to the private area.
I have created a test site to investigate.
3 plugins activated: Woocommerce, Woodmart Core, WPBakery and problem still happening.
Please if you will check it, after leave my site as the same it was before. (Like the child theme activated and the other settings.)
Did you checked the link that I have sent to you on private content? In that category I almost have 100 posts.
I have never speaked about product category.