Aurender N10 connection with the network

I just purchased the Aurender N10 used off of Audiogon this past week.

Quick start guide tells me that the unit will connect to the network with a Cat 5 cable.  Download the phone app on my Samsung phone.  Sounds simple.

3 days later after all kind of changes for the life of me I cannot get this think connected to my network.. WTF.   Yes I restarted all my modems and routers a few times.  Nothing.

Any suggestions other than getting my money back if the guy will do that?