Wifi range extender won't accept router password

[JP13]

I cannot connect my macbook to the extender because the extender won't accept my routers password.

I have already tried some of the suggestions made by others but afriad have come up with nothing helpful.   I'm still none the wiser.

How do I find out what the IP addresses ar for devices connected to my router??

I have spent hours on this already.  Do hope somebody can help.   Thanks

[DarrenM]

sometimes the IP address for the extender is 192.168.1.250 that may get you into the settings of the extender if not you will need to access the routers settings and find the attached devices and see if the extender is connected.

DarrenM