Here's the steps in order to use the WPS connection of your modem.
1 ) Tap the WPS icon on the device’s screen.
2 ) Immediately press the WPS button on your modem router.
3 ) The WPS LED flashes for about two minutes during the WPS process.
4 ) When the WPS LED is on, the client device has successfully connected to the
On/Off - Turns on when a WPS synchronization is established
and automatically turns off about five minutes later.
Flash - A wireless device is trying to connect to the network via
WPS. This process may take up to 2 minutes.