If you've installed Oliver POS, a hidden page called "Oliver POS Products" will be added to your website. However, there is a small change that the page will not be hidden and may appear on your website menu. But there's an easy fix! Just go into the backend of your WordPress site, and go to 'Pages.'
You should be able to find 'Oliver POS Products' listed amongst your pages. Hover over the page, and select 'Quick Edit.'
Next to 'Status' you should see that it's selected as 'Published'. Simply click this dropdown menu and select 'Draft' instead.
Then hit 'Update' to save your changes. Now, the page won't be visible anywhere on your site.