Thanks for your information, Sergiy!
Regarding the Yeelight Alexa Skill and IFTTT service deployment, we actually have discussed and evaluated for quite a long time. Due to some privacy and political issue, the database/cloud (Singapore and China Mainland) has to be isolated, so to provide Alexa and IFTTT support for all customers around the world, we actually have to provide two service (one service can only connect to one Xiaomi cloud), which will cost a lot of money that we currently can't afford . Considering Echo & IFTTT is not popular in China, we decide to give up Chinese users and only provide services to international users. I believe from now on, all international users will be encouraged to connect XiaoMi devices to Singapore server for a better and faster experience, so please wait some time and I believe you will get the same function set between China & Singapore server.
For now, Yeelight users, you have to choose: either Echo & IFTTT or Xiaomi ecosystem... Sorry for that, hopefully we will fix it soon.