I try to connect the app with the bulb and I cant I checked the router and it’s connected. I restart the bulb and try to connect it again but nothing. I did this a lot of times
i had this problem and what solved for me was to go into iphone general settings, search Mi Home app and make sure the app has permission for Local Network granted
Do you really have to post same thing in so many threads???
If any one from staff it will ever respond it will not be necessary that him or anyone else to respond on so many threads. SInce nobody cares from Yeelight staff and he thinks that he found a solution for the problem.
Same situation was described in different threads 
Nothing personal.