smart config is not work when 2.4G and 5G uses the same SSID

[hawkhsieh]

I use the XiaoMi wifi router and setup the 2.4g and 5g to use the same SSID at the same time.
First I try to use smart config app to find the esp8266 which runs smart config.
Then, the esp8266 cant find the wifi AP. There is any log print about the smart config, it is silent.
Meanwhile, the other esp8266 runs the WPS example, it works, 8266 finds and connects to the wifi AP that smart config doesn't find.

[ESP_Xutao]

hi:
our ESP8266 can not support 5G,so you want to ap throught smartcong,you need to assure your phone connet 2.4G.