There have been quite a few posts about how to resolve WiFi connection issues. Here is one thread which may have solutions for you. WiFi setup not seeing my network
Basically make sure you have a 2.4GHz network setup with a visible SSID. I have Aruba access points and have no issues but I have tethered the WF hub to a Raspberry Pi, various cell phones, iPad, and Netgear Hotspot, all without any issues. That said, I can understand someone wanting a wired connection, especially if it could be powered over PoE.
IIRC, adding a wired option would have added cost.