Wyze Home Montioring Keypad won't connect (solved)

My home monitoring system finally arrived. Connect the hub (it is directly plug into router), no problem. Connecting both entry sensor and motion sensor. But then when I try connecting the keypad. Nothing happens, home doesn’t flash. Hub and router is about 2 ft apart. And with it not connecting I cannot continue with the setup.

Could the battery that is included with the keypad be dead? If so, how do open it to change batteries?

Update: I manage to open the battery compartment and changed battery. It is now connected.