Can't Setup Yeelight Color Bulb

Hi, I’ve acquired a MI Yeelight LED Color Bulb, which I haven’t been able to setup / connect to my internet connection, via Mi Home or Yeelight App. I’ve seen a lot of internet tutorials (youtube and forums), changed the router DNS and so much other stuff. Yes, the light bulb appears on the DHCP router list, also, a “yeelink-light-color…” WiFi network can be spotted, but, when I try to to connect my phone, get’s disconnected within seconds, or the network simply disconnects. I do not know what else to do. Thanks in advance.

PS: Network band is 2.4Ghz. I’m from Mexico, if that helps.