NodeMCU cannot connect to WiFi

let me ask everyone, when i connect esp8266 and blynk, it says can’t connect to nodeMCU please help

@Phan_V_ng please don’t post issues like this in an existing topic that is about a problem with different hardware to the hardware you are using.

I’ve moved your post to a new topic of your own.

The error message you are seeing is telling you that the NodeMCU cannot find the WiFi network called “NameVuong”.
This is probably because you’ve mis-spelled the SSID of the WiFi network, or the network is not operating on the 2.4GHz band.