Very disappointed. App doesnt work

Im curious to know what happened to the other comments. I left a comment some time ago, same issues still occur.

1. It doesnt tell me which items are out of stock. It is very inconvenient to go back to the Shopify app to see my inventory. Shopify POS should be able to tell you how many items are on stock
2. Sometimes The items still show on the shopping cart even after the purchase has been completed. The app forecloses before I complete the purchase.
3. The app doesnt update the tax information. Regardless of where I sell, it will always calculate the Los Angeles Tax, even if I sell in other counties.

Evolve apparel about Shopify Point of Sale (POS)