I can not connect the lamp (YLDP06YL)

I live in Russia. Bought three lamps YLDP06YL. The seller indicated in the announcement that this is the English version. My phone IPhone X. I tried to use different servers, I tried different applications: Yeelight and Mi Home. I can not connect the lamp. I changed the DNS of the router to Nothing helps. How do I connect the lamps? I have been trying to do this for a week now.

1、The bulb can only work with a router using WPA / WPA 2 encryption method with a password, 2.4Ghz.
2、Please make sure if the bulb connected to your router when the connection failed.
3、If connected, please try changing DNS to