Hi,
Problem is not related to the content access. It caused by JavaScript error from jQuery. It takes place for the demo user and does not for admin.
Content is shown usually by jQuery effect during page scrolling. But page for demo user has JavaScript errors, which prevents this effect execution, as I suppose. So a problem is related to a theme.
I changed a role for demo user to subscriber temporally. Content (product description) was visible.
So there is an issue with a page for user with ‘administrator’ role but the username other than ‘admin’, which cause a JavaScript error.
This JavaScript error takes place even with User Role Editor Pro deactivated.