Azuka Ikade :
Neur0nauT :
You will require the administrator login details to access the control panel. From there you can change various settings including the WiFi password. You should consult the owners manual to do this.
I have tried to login with the administrator login but it is not opening.
what else can l do
If the administrator username/password is not allowing you to access the devices control panel, then you may have to carry out a factory reset on it. be aware, this will clear any setup configurations on the device...(including resetting the login details to factory default) which may disable your internet connection until it is reconfigured.
If you are the owner of the device, you will have to consult the device user manual to read how to do this.