Upnp problem

[AdamN]

Thanks for testing, i guess it wasn't timeout issue if your iPhone still can't find the UPnP device, may be related to the new version of iOS (ie. no longer compatible with the miniupnpc we're using, may be we just need to update our miniupnp library).

Regarding, data from unknown port, it can also because you're behind NAT, where port-forwarding won't works (even UPnP & DMZ won't work), which is related to your ISP.
In this case, VPN is the only way.

Btw, may i know what is your iOS version and your router model? in case there are other similar reports, so we can find out their similarity.