I am sorry if this was not more helpful, but it sure is strange. Personally, I would try to remedy the situation in that this really is not a $100 or less switch. These sell for about $1,299 MSRP new though admittedly most folks get some small discount from their supplier or vendor.
I am honestly not sure if it is broken or not. You would have to be able to connect to it to troubleshoot it further, but I would expect Lennar to most likely check it out for you.
I would agree that Ruckus is unusual in a home, but these things are workhorses quite honestly! I have used them to run VoIP phones in a pinch; since, most of our deployments have multiple VLANs - I have trunked those in. I have used these as a media converter between optical fiber and copper ethernet for an Avaya analog gateway, I have used these with VRRP for fail-over to Cradlepoint during WAN failure, I have used these as small WAN routers, and as a top of rack switch talking back to a Cisco speaking OSPF to exchange routing tables.
Honestly, my experience has been that these are work-horses. Personally, I would have one in my house no problem, but I can completely see how this is anything but homeowner friendly.
I could mention they actually do have a configuration webpage if you enable it. It is not on by default, and you are certainly going to have to at least configure an IP address and mask from the console first. The website really does not do everything, but it is something. If that is something you want to do and create a topic, I am sure some folks will help.