Why did you switch from ZHA? If you were having problems there too it suggests a Zigbee issue rather than one relating to the integration. The most common (working from HA outwards) are:
- Unstable power supply
- Interference relating to the installation (Zigbee stick too close to other equipment)
- Interference from a noisy environment (wi-fi, neighbour’s wi-fi, smart utility meters)
- Weak mesh (not enough routers, too much reliance on direct connections between sensors and the coordinator)
The last is the most common source of problems, by quite a long way.
Anyway, to comment sensibly we need a lot more information about your setup. Perhaps you could describe it in your own language, then run that through Google translate to turn it into English?
Alternatively, there are a number of websites and Facebook groups in other languages.