KinCony Z1 Problem

[siwybug]

Hello, I purchased a KinCony Z1. I have already tried many different ways of flashing various firmware versions, but the device is generally unstable. It connects to Wi-Fi and to MQTT, but nothing more than that works. No MQTT entities appear and nothing is discovered automatically. When I try to add ZigBee devices, it scans for them, detects them, pairs successfully, sends signals, and everything seems fine — but after a short while, those devices disappear.