I am trying to get iftt working with yeelight color bulb, but unsuccessfully. In the applets I cannot choose which lamp to use as I always “no option found” response. Maybe it depends that I am using mainland China server? If I use Singapore server the apples will work? And is I use that server what I loose in my configs changing server?
Yes, you have to use s’pore server… 
And, yes, you have to set everything from start on new server.