To who suffering device offline issue,
Recently we received some feedbacks that your device shows offline in Yeelight and Mihome, I feel so sorry about that. Actually, there is a lots of things may cause device offline, such as network, router, backend etc., and the issue is different case by case. For the case of backend issue, we need co-work xiaomi backend engineer. And now we need your help to figure out what's going on there. So could you provider the information below:
1、Which device do you have? And what's the firmware version?
2、Which server do you connect to?
3、Please help confirm if the device shows offline both in Yeelight and Mihome.
4、If you have Amazon Alexa or Goole home, please help confirm if they can control the device when the device shows offline?
5、If the device shows offline, please have a try with "Turn All on/Off" in Yeelight to see if it works.
6、Please confirm if the device still connected to your router(You can check the DHCP list)?
7、Please confirm if your device could come back online after power cycle in two minutes?
8、What is the type of router?
9、Have you tried with setuping a hotspots with another phone, and connect your bulb to it to see what's going on?
If you have the issue, we can contact with WeChat to do some live debugging, you can connect me with my WeChat ID: "Andydingding".
Much appreciate with your help!