AirPort Express network extension issue
I recently purchased a new 802.11n airport express in order to extend the wifi network in my apartment.
Unfortunately AirPort Utility on my MacBook is having a hard time finding the device when plugged in in an area with a strong wifi signal. The only time Utility finds it is when it is plugged directly in to my MacBook or router (a brand new Netgear nighthawk 1900). Even when it does recognize the AirPort, it can't find the name of my home wifi network (under the 'Wireless' tab) and will not allow me to extend.
The instructions included with the product don't help with regard to extending a network.
What am I doing wrong?
MacBook Pro (13-inch Mid 2010), OS X Yosemite (10.10.2)