What do you mean "od Xiaomi System"? Before they sell both saying that Zigbee is universal. I was not able to find any compatibility charts. But ok. I also bougth Aqara bulb. Even this doesn't work, same story as with Ledvance.
Reset bulbs, will try reset hub tomorrow. Hub can't see bulbs not in automatic neither in manual add. I added door sensors, motion sensors and smart plug - no problem.
China version has wider list of accessories. When I trying to add bulb hub says "this bulb is not supported". Today I bought Aqara bulbs same story, can't add.