Problem to Connect Yeelight LED Bulb Color V2

I’m having connection problems. I’ve tried reset de lamp with the turn on/off routine 10000x, and tried with all servers, Yeelight APP, Mi Home App, IOS, Android, different routers, etc.

The problem is that it does not appear in the DHCP list. My router is a TL-WR841N, a 2.4ghz router, with no special characters in password. I’m from Brazil.

Can someone help me?