George,
Something to check is to only connect one unit at the same time to the SkyRadar. I've seen where the SkyRadar was not handling being connected to 2 devices of different type at the same time (peer-to-peer vs LAN network). Some of the SkyRadar units only supported one IP address or a static IP address and this could be a product of the internal DHCP server. I'll have to do some additional testing if we can get a D2 from Alexey at Radenna.
I'd be curious if you only connected the SkyRadar to the iFly, if you saw traffic. Also, make sure the IP settings on the Wi-Fi setup page on the iFly 720 is populating with numbers. Something like 192.254.xxx.xxx and a subnet of 255.255.xxx.xxx, as this will tell you if you are truly connected. I hope this helps.