I bought a Yeelight white bulb. I was able to connect both to the app, Alexa, and IFTTT. I learned how to reset the bulb (on & off 5x), connect to the Singapore server, and the others hints provided by others.
I tried to connect it to a friend's network.
I was not able to reconnect the YeeLight to the other network. Now, I can't connect it to MY network. So, the Yeelight is great IF you never connect it to another network or change your wireless router. I have managed to reset the bulb a dozen more times. I try to add it as a new device in the Singapore server, China server, USA server. I have reset my iPhone, my router, logout, etc. Every time, when I try to add a new device, the app shows connected at 25%, then times out. My original light shill shows on my list of devices in the app. I do not know how to remove it or un-pair it. It does not connect to the wifi that it was originally connected. It does not show up on the DHCP list. It did before I TRIED to install in on another wifi.