First problem is that app need to be installed from file, not from play store, which is a little insecure. For one version antivirus software has warning. Also direct registration over BT on my OnePlus 6 with Android 10 didn't work, but worked on tabled with Android 7, But with gateway both devices work well. It's nice to have app for PC, very useful. But software still needs some polishing. Devices works well, connection is much better on longer distance then some Zigbee devices I have. Hardware excellent software good.
Very fast delivery. Good tracking from warehouse to home. Sensor and gateway working perfect an very accurate. Very easy installation. Android app available from play store!