WIFI connect issues

My Wyze came won’t connect to Wifi. It said connecting but then said failed to connect to Wifi.
I’ve had this camera over a year and still can’t use it because of the wifi issue.

Camera only works with 2.4ghz network. Make sure your phone is connected to the correct SSID/WIFI when you try to add the camera.

Is the camera setup already or you can’t connect and set it up at all? Do you have any special characters in your wifi ssid? What kind of wifi network do you have? What device are you using to set it up.