From you are saying, your gateway is 192.168.1.1 and your windows 8 ip is 192.68.1.2. Ignore the public ip for now.
Use your display to see what is the apex IP. If there is no IP, power cycle the Apex. After getting the ip in the form of 192.168.1.X, then do step #2. Please read my steps carefully. It took me time to type them and spell check.
"you know the ip of the apex, you can just open a browser on your computer or on your tablet, phone...using the same network, enter the address of the apex and hit enter. That will get you to the apex web page. I suggest a computer because that guy has to use the same router which means it has the same subnet IP as the apex. I hope you don't have a few routers with more than a simple setup like most people.
For example: your apex ip is 192.168.1.20, then enter "192.168.1.20" onto the address bar of the browser.
If that does not work, you can download the apex browse app to see if that guy can find the apex.
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