Unstable HA instance

I started work with HA few days ago. I used Tuya Zigbee Gateway before and all my devices are compatible with this gateway. For HA I use Pi 4 B+ with Zigbee2MQTT usb stick. I added and configured all my devices, everything worked fine but on the evening some of my devices stopped to respond. Two Sonoff switches response with few minutes delay, most of in-wall switches do not response at all. I have no idea what was happened.