Skinners Technologies s.r.o. review for Point of Sale

The POS app is very unstable. It keeps disconnecting from Shopify card reader and Shopify tested printer. It also requires admin sign in every couple of days. Card reader sometimes cannot b connected at all. Android Tap to Pay in this app is not working on one of our devices, even though the device supports it and meets every requirement needed (and used to work previously). Talking with Shopify support is endless.