Issues facing with this plugin

Hi,

You built a nice and simplified plugin. But some of your features are not working correctly.

1. When Hide out of stock is enabled, even out of stock items are showing in the POS for cashier and admin

2. In product override option, all products showing quantity as 100. Not showing actual quantity of the items, how to fix it?

3. There is only payment option Cash in POS, but in retail shops customers used to pay using Cards too. How to add Card option in POS checkout?

4. In POS after selecting an item and the customer when I click on Checkout, it just keep showing loading icon, but order process in background. How to solve it?

Thank you