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If you activate the Self Made Store plugin after that you have daactivated it. Make sure you enable the “Show Product Inventory” checkbox in Settings -> Self Made Store Settings page. After saving it, you can, of course, disable it if needed.
Self Made Store plugin let the users to post their Products and plugin includes Widget which show the product information super easily. Thumbnail, Title, Price, Weight, Inventory. User is able to change the widget’s displayed title, default is Products. And user is able to change how many product the widget would show.(Default is 3 most recent products).
Additional plugin features * Bootstrap 3.3.6 * Widget is fully responsive * Thumbnails is 100×100

Self Made Store

Super easy to use

Self Made Store plugin let the users post their products on the site & show most recent product easily via widget.

CaphLabs

Hide SKU From Customer is a lightweight plugin that lets you remove SKU display from the front end of your WooCommerce store for customers — while keeping it fully functional for admin users.
As of version 2.4, this plugin includes: 
– ✅ Admin settings under WooCommerce → Settings → Products to toggle SKU visibility 
– ✅ Optional hiding of SKUs even for admins on the front end 
– ✅ A small green admin bar badge to indicate when the plugin is active 
– ✅ ✅ ✅ HPOS (High Performance Order Storage) Compatibility — future-proof and Woo 8.6+ ready
Perfect for stores that use SKUs internally but don’t want to display them to customers on product pages, loops, quick view, etc.

Hide SKU From Customer

WooCommerce SKU Visibility plugin allows you to hide product SKUs from customers while retaining full functionality for store admins.

Self Made Store vs Hide SKU From Customer