Hi Stan,
If you wish, you can share an admin account (my email is [email protected]), so I could log in and help you set up the plugin.
A couple of notes:
1. “… I still manage to add a quantity of 1 into the cart…”
> Please try setting “Add to cart” validation option to “Validate and add notices” in “WooCommerce > Settings > Product Quantity > General”. This will restrict to correct quantities right away on add to cart button click (instead of just notices on the cart and checkout pages).
2. “… quantity dropdown…”
> Please make sure that product has a maximum quantity set (it’s needed as dropdown can’t have an unlimited number of values, so maximum must be set). You can use Max value fallback option in “WooCommerce > Settings > Product Quantity > Quantity Dropdown” – it will be used for all products which don’t have a maximum quantity set.
3. “… Do I need to install the Free version…”
> No, Free version is not needed, if Pro is installed.
4. “… I didn’t see any option in the product to set the minimum quantity…”
> If you want to set min quantity on per product basis – please make sure that you have enabled Per product option in “WooCommerce > Settings > Product Quantity > Minimum Quantity > Per Item Minimum Quantity”.