Router firewall and validating identity
Properly connected Wi-Fi takes precedence over mobile broadband, but it can be helpful to disable your device's mobile network connection while debugging Wi-Fi.
Note that whenever you're trying to connect an Android Wi-Fi client to any network name, status is displayed on the Wi-Fi Settings panel, in the row labeled Wi-Fi.
To resolve this issue, disable 802.1X feature on your Windows computer.
Sometimes when the settings of the client device and the router don't exactly match, the client won't see the router's Wi Fi network.
WAN ports are usually colored blue and/or labeled with an icon that looks like a little monitor; they are intended to be used to connect devices that provide internet, such as Cable, DSL, or Satellite modems.
If you see a message about Validating Identity upon connecting to the Cradlepoint router, it means WEP security mode is enabled.
The client must support the security mode required by the AP or router: Open, WEP, WPA, or WPA2.If RADIUS is working but your Android Wi-Fi client's connect requests are rejected, look for an 802.1X Extensible Authentication Protocol (EAP) problem.Your client must support one of the EAP types required by your RADIUS server and must supply a valid login.If you're running in this issue, try the following: Check if there are other wifi-capable client devices (laptops, tablets, phones, etc) that CAN see the Cradlepoint's wifi network.Scenario 1: Just one device cannot see the wireless network, while others can.
Search for router firewall and validating identity:
Unless a WLAN is open (i.e., unsecured), both endpoints must be configured with (or dynamically receive) identical keys to encrypt traffic between them.